D Answer Answer D .003 m/s D .003 m/s [This object is a pull tab] - - PDF document

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Forces & Motion Unit Test Study Guide Review Slide 3 / 38

1 A snail travels 10 m in 3000 seconds. What is the snail's average speed?

A 60000 m/s B .02 m/s C 600 m/s D .003 m/s

Answer

Slide 3 (Answer) / 38 1 A snail travels 10 m in 3000 seconds. What is the snail's average speed?

A 60000 m/s B .02 m/s C 600 m/s D .003 m/s

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Answer

D

Slide 4 / 38 2 A blimp travels at 3 m/s for 1000 s. What distance does the blimp cover in that time?

A 500 m/s B 3000 m/s C 4500 m D 500 m

Answer

Slide 4 (Answer) / 38 2 A blimp travels at 3 m/s for 1000 s. What distance does the blimp cover in that time?

A 500 m/s B 3000 m/s C 4500 m D 500 m

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Answer

C

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3 When your teacher times your mile run at 8.2 minutes,

that means your speed was 8.2 mi/min. Was this your average speed or your instantaneous speed?

A Average Speed B Instantaneous Speed

Answer

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3 When your teacher times your mile run at 8.2 minutes,

that means your speed was 8.2 mi/min. Was this your average speed or your instantaneous speed?

A Average Speed B Instantaneous Speed

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Answer

avg speed = 8.2mi/min

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4Does a speedometer measure the average speed or the

instantaneous speed?

A Average Speed B Instantaneous Speed

Answer

Slide 6 (Answer) / 38

4Does a speedometer measure the average speed or the

instantaneous speed?

A Average Speed B Instantaneous Speed

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Answer

Instantaneous Speed

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5A swordfish travels for two hours. The first

hour he covers 110 kilometers, and the second hour he covers 110 kilometers. What is the average speed of the swordfish?

A 55 km/h B 84 km/h C 110 km/h D 194 km/h

Answer

Hint: Remember that Average speed is total distance travelled divided by total time

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5A swordfish travels for two hours. The first

hour he covers 110 kilometers, and the second hour he covers 110 kilometers. What is the average speed of the swordfish?

A 55 km/h B 84 km/h C 110 km/h D 194 km/h

Hint: Remember that Average speed is total distance travelled divided by total time

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Answer

C

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6A dog walks outside to go the bathroom every

• day. She is small and not very quick. If she

walks outside at a speed of 3 meters per second and walks 150 meters before she is ready, how long does it take her?

A 50 seconds B 2 minutes C 188 seconds D 90 seconds

Answer

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6A dog walks outside to go the bathroom every

• day. She is small and not very quick. If she

walks outside at a speed of 3 meters per second and walks 150 meters before she is ready, how long does it take her?

A 50 seconds B 2 minutes C 188 seconds D 90 seconds

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Answer

A

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7 Carlos and Gina are riding on their horses

to go into town. They travel 140 meters in 14 seconds going west. What is their velocity?

A 490 m/s west B 10 m/s west C 490 m/s D 10 m/s

Answer

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7 Carlos and Gina are riding on their horses

to go into town. They travel 140 meters in 14 seconds going west. What is their velocity?

A 490 m/s west B 10 m/s west C 490 m/s D 10 m/s

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Answer

B

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8A car travels 200 km/h west for 2 hours. The

car then travels 150 km/h east for one hour. What is the car's position relative to its starting position?

A 50 km west B 150 km west C 250 km west D 50 km east

Answer

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8A car travels 200 km/h west for 2 hours. The

car then travels 150 km/h east for one hour. What is the car's position relative to its starting position?

A 50 km west B 150 km west C 250 km west D 50 km east

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Answer

A

Slide 11 / 38 9A nitro-methane powered top fuel dragster launches from rest to race against an opponent. Why did the car accelerate? A increased speed B decreased speed C changed direction

Answer

Slide 11 (Answer) / 38 9A nitro-methane powered top fuel dragster launches from rest to race against an opponent. Why did the car accelerate? A increased speed B decreased speed C changed direction

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Answer

A

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10A driver hits the brakes to slow down at an intersection.

As the car's speed is decreasing it has A positive acceleration B negative acceleration C no acceleration D more information is needed

Answer

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10A driver hits the brakes to slow down at an intersection.

As the car's speed is decreasing it has A positive acceleration B negative acceleration C no acceleration D more information is needed

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Answer

B

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11Which of the following graphs depicts the acceleration of

a runner speeding up to pass someone. A B C

x

Y

Speed (m/s) Time (s) x

Y

Speed (m/s) Time (s)

x

Y

Speed (m/s) Time (s)

D

x

Y

Speed (m/s) Time (s)

Answer

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11Which of the following graphs depicts the acceleration of

a runner speeding up to pass someone. A B C

x

Y

Speed (m/s) Time (s) x

Y

Speed (m/s) Time (s)

x

Y

Speed (m/s) Time (s)

D

x

Y

Speed (m/s) Time (s)

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Answer

C

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12Which of the following speed vs time graphs

depicts the position vs time graph shown in the graph below?

A B C

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Answer

A Slide 14 (Answer) / 38

12Which of the following speed vs time graphs

depicts the position vs time graph shown in the graph below?

A B C

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Answer

A

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13A ball is traveling down a hill at 4 m/s. If the

ball increases in speed to 8 m/s in 4 seconds, what is the acceleration of the ball?

A 4 m/s B 4 m/s/s C 1 m/s D 1 m/s/s

Answer

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13A ball is traveling down a hill at 4 m/s. If the

ball increases in speed to 8 m/s in 4 seconds, what is the acceleration of the ball?

A 4 m/s B 4 m/s/s C 1 m/s D 1 m/s/s

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Answer

D

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14Forces are all around us. Which of the

following do you think are examples of forces? (choose all that apply) A Gravity B Friction C Muscles D Wind

Answer

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14Forces are all around us. Which of the

following do you think are examples of forces? (choose all that apply) A Gravity B Friction C Muscles D Wind

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Answer

A & B

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15What is the SI unit for force?

A Pounds B Kilograms C Newtons

Answer

Slide 17 (Answer) / 38

15What is the SI unit for force?

A Pounds B Kilograms C Newtons

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Answer

C

Slide 18 / 38 16A +20 N force acts on a car and at the same time, a -30 N force acts on the car. What is the net force acting on the car and is it balanced? A

• 30 N unbalanced

B

• 10 N unbalanced

C

• 10 N balanced

D + 30 balanced

Answer

Slide 18 (Answer) / 38 16A +20 N force acts on a car and at the same time, a -30 N force acts on the car. What is the net force acting on the car and is it balanced? A

• 30 N unbalanced

B

• 10 N unbalanced

C

• 10 N balanced

D + 30 balanced

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Answer

B

Slide 19 / 38 17The force of gravitation between an object and a planet is increased as they move away from each other:

True False

Answer

Slide 19 (Answer) / 38 17The force of gravitation between an object and a planet is increased as they move away from each other:

True False

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Answer

False

Slide 20 / 38 18A 100 kg kid is on the moon, where g = 1.67 m/s2. What is the boy's weight?

A 83.5 kg B 167 kg C 167 N D 29.9 N

Answer

Slide 20 (Answer) / 38 18A 100 kg kid is on the moon, where g = 1.67 m/s2. What is the boy's weight?

A 83.5 kg B 167 kg C 167 N D 29.9 N

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Answer

C

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19What is the net force acting on the object

below?

7 N

• 8 N
• 10 N

Answer

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19What is the net force acting on the object

below?

7 N

• 8 N
• 10 N

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Answer

• 11 N

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20 Is the object in equilibrium?

Yes No 7 N

• 8 N
• 10 N

Answer

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20 Is the object in equilibrium?

Yes No 7 N

• 8 N
• 10 N

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Answer

No

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21What is the net force acting on the object

below?

25 N

• 15N
• 10 N

Answer

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21What is the net force acting on the object

below?

25 N

• 15N
• 10 N

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Answer

0 N

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22 Is the object in equilibrium?

Yes No 25 N

• 15N
• 10 N

Answer

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22 Is the object in equilibrium?

Yes No 25 N

• 15N
• 10 N

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Answer

Yes

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23Acceleration due to gravity on Jupiter is

26.1 m/s2. How much would a 25 kg person weigh on Jupiter?

Answer

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23Acceleration due to gravity on Jupiter is

26.1 m/s2. How much would a 25 kg person weigh on Jupiter?

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Answer

653 N

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24Acceleration due to gravity on Earth's Moon

is 1.67 m/s 2. How much would a 113 kg person weigh on Earth's Moon?

Answer

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24Acceleration due to gravity on Earth's Moon

is 1.67 m/s 2. How much would a 113 kg person weigh on Earth's Moon?

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Answer

189 N

Slide 27 / 38 25Inertia is the reluctance any material

• bject has to change in its state
• f motion.

True False

Answer

Slide 27 (Answer) / 38 25Inertia is the reluctance any material

• bject has to change in its state
• f motion.

True False

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Answer

True

Slide 28 / 38 26The law of inetria applies to: A moving objects B nonmoving objects C both moving and nonmoving objects

Answer

Slide 28 (Answer) / 38 26The law of inetria applies to: A moving objects B nonmoving objects C both moving and nonmoving objects

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Answer

C

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27Which object has the greatest

inertia? A Car B Tennis Ball C Freight Train

Answer

Slide 29 (Answer) / 38

27Which object has the greatest

inertia? A Car B Tennis Ball C Freight Train

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Answer

C

Slide 30 / 38 28A ball will accelerate and increase its velocity when it feels an unbalanced force. True False

Answer

Slide 30 (Answer) / 38 28A ball will accelerate and increase its velocity when it feels an unbalanced force. True False

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Answer

True

Slide 31 / 38 29When the force acting on an object decreases, the resulting acceleration will: A remain constant B increase C decrease

Answer

Slide 31 (Answer) / 38 29When the force acting on an object decreases, the resulting acceleration will: A remain constant B increase C decrease

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Answer

C

Slide 32 / 38 30When the objects mass is decreased but the applied force stays the same, the resulting acceleration will: A remain constant B increase C decrease

Answer

Slide 32 (Answer) / 38 30When the objects mass is decreased but the applied force stays the same, the resulting acceleration will: A remain constant B increase C decrease

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Answer

B

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31You are riding your bicycle to the park

to meet a few friends. As you ride, you apply a force of 40 N and accelerate at a rate of 0.4 m/s 2. What is the total mass of the bicycle and you?

A 75 kg B 100 kg C 120 kg

Answer

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31You are riding your bicycle to the park

to meet a few friends. As you ride, you apply a force of 40 N and accelerate at a rate of 0.4 m/s 2. What is the total mass of the bicycle and you?

A 75 kg B 100 kg C 120 kg

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Answer

B

Slide 34 / 38 32When you sit on a chair, the chair pushes back with more force than your weight. True False

Answer

Slide 34 (Answer) / 38 32When you sit on a chair, the chair pushes back with more force than your weight. True False

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Answer

False

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33 Which of the following statements pertains

to the third law of motion? A Action and Reaction pairs always act on the same object. B Mass is indirectly proportional to acceleration. C An object at rest will remain at rest unless acted on by an unbalanced force. D If a force occurs, action reaction forces are present.

Answer

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33 Which of the following statements pertains

to the third law of motion? A Action and Reaction pairs always act on the same object. B Mass is indirectly proportional to acceleration. C An object at rest will remain at rest unless acted on by an unbalanced force. D If a force occurs, action reaction forces are present.

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Answer

D

Slide 36 / 38 34How can a small toy have the same momentum as a large car? A toy has large speed B both car and toy are at rest C toy has no mass D A & B

Answer

Slide 36 (Answer) / 38 34How can a small toy have the same momentum as a large car? A toy has large speed B both car and toy are at rest C toy has no mass D A & B

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Answer

D

Slide 37 / 38 35If a 3 kg toy truck is moving at 4 m/s, what is the toy's momentum? A 3 m/s B 2 kgm/s C 12 kgm/s D 12 m/s

Answer

Slide 37 (Answer) / 38 35If a 3 kg toy truck is moving at 4 m/s, what is the toy's momentum? A 3 m/s B 2 kgm/s C 12 kgm/s D 12 m/s

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Answer

C

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36What two factors does

momentum depend on? A mass and volume B mass and acceleration C mass and velocity D mass and force

Answer

Slide 38 (Answer) / 38

36What two factors does

momentum depend on? A mass and volume B mass and acceleration C mass and velocity D mass and force

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Answer

C