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

Slide 1 / 38 Slide 2 / 38 New Jersey Center for Teaching and Learning Progressive Science Initiative Forces & Motion This material is made freely available at www.njctl.org and is intended for the non-commercial use of students and teachers. These materials may not be used for any commercial purpose without the written permission of the owners. NJCTL maintains its website for the convenience of teachers who wish to make their work available to other teachers, participate in a virtual professional learning Unit Test community, and/or provide access to course materials to parents, students and others. Study Guide Review Click to go to website: www.njctl.org www.njctl.org Slide 3 / 38 Slide 3 (Answer) / 38 1 A snail travels 10 m in 3000 seconds. 1 A snail travels 10 m in 3000 seconds. What is the snail's average speed? What is the snail's average speed? A 60000 m/s A 60000 m/s B .02 m/s B .02 m/s C 600 m/s C 600 m/s D Answer Answer D .003 m/s D .003 m/s [This object is a pull tab] Slide 4 / 38 Slide 4 (Answer) / 38 2 A blimp travels at 3 m/s for 1000 s. What 2 A blimp travels at 3 m/s for 1000 s. What distance does the blimp cover in that distance does the blimp cover in that time? time? A 500 m/s A 500 m/s B 3000 m/s B 3000 m/s C Answer Answer C 4500 m C 4500 m D 500 m D 500 m [This object is a pull tab]

Slide 5 / 38 Slide 5 (Answer) / 38 3 When your teacher times your mile run at 8.2 minutes, 3 When your teacher times your mile run at 8.2 minutes, that means your speed was 8.2 mi/min. Was this your that means your speed was 8.2 mi/min. Was this your average speed or your instantaneous speed? average speed or your instantaneous speed? A Average Speed A Average Speed B Instantaneous Speed B Instantaneous Speed avg speed = Answer Answer 8.2mi/min [This object is a pull tab] Slide 6 / 38 Slide 6 (Answer) / 38 4 Does a speedometer measure the average speed or the 4 Does a speedometer measure the average speed or the instantaneous speed? instantaneous speed? A Average Speed A Average Speed B Instantaneous Speed B Instantaneous Speed Instantaneous Answer Answer Speed [This object is a pull tab] Slide 7 / 38 Slide 7 (Answer) / 38 5 A swordfish travels for two hours. The first 5 A swordfish travels for two hours. The first hour he covers 110 kilometers, and the hour he covers 110 kilometers, and the second hour he covers 110 kilometers. second hour he covers 110 kilometers. What is the average speed of the What is the average speed of the swordfish? swordfish? A 55 km/h A 55 km/h C Answer Answer B 84 km/h B 84 km/h C 110 km/h C 110 km/h [This object is a pull tab] D 194 km/h D 194 km/h Hint: Remember that Average speed is total Hint: Remember that Average speed is total distance travelled divided by total time distance travelled divided by total time

Slide 8 / 38 Slide 8 (Answer) / 38 6 A dog walks outside to go the bathroom every 6 A dog walks outside to go the bathroom every day. She is small and not very quick. If she day. She is small and not very quick. If she walks outside at a speed of 3 meters per walks outside at a speed of 3 meters per second and walks 150 meters before she is second and walks 150 meters before she is ready, how long does it take her? ready, how long does it take her? A 50 seconds A 50 seconds Answer Answer A B 2 minutes B 2 minutes C 188 seconds C 188 seconds [This object is a pull tab] D 90 seconds D 90 seconds Slide 9 / 38 Slide 9 (Answer) / 38 7 Carlos and Gina are riding on their horses 7 Carlos and Gina are riding on their horses to go into town. They travel 140 meters in to go into town. They travel 140 meters in 14 seconds going west. What is their 14 seconds going west. What is their velocity? velocity? A 490 m/s west A 490 m/s west B 10 m/s west B 10 m/s west C 490 m/s C 490 m/s D 10 m/s Answer D 10 m/s Answer B [This object is a pull tab] Slide 10 / 38 Slide 10 (Answer) / 38 8 A car travels 200 km/h west for 2 hours. The 8 A car travels 200 km/h west for 2 hours. The car then travels 150 km/h east for one hour. car then travels 150 km/h east for one hour. What is the car's position relative to its What is the car's position relative to its starting position? starting position? A 50 km west A 50 km west B 150 km west B 150 km west C 250 km west Answer C 250 km west Answer A D 50 km east D 50 km east [This object is a pull tab]

Slide 11 / 38 Slide 11 (Answer) / 38 9 A nitro-methane powered top fuel 9 A nitro-methane powered top fuel dragster launches from rest to race dragster launches from rest to race against an opponent. Why did the car against an opponent. Why did the car accelerate? accelerate? A increased speed A increased speed A Answer Answer B decreased speed B decreased speed C changed direction C changed direction [This object is a pull tab] Slide 12 / 38 Slide 12 (Answer) / 38 10 A driver hits the brakes to slow down at an intersection. 10 A driver hits the brakes to slow down at an intersection. As the car's speed is decreasing it has As the car's speed is decreasing it has A positive acceleration A positive acceleration B negative acceleration B negative acceleration B Answer Answer C no acceleration C no acceleration D more information is needed D more information is needed [This object is a pull tab] Slide 13 / 38 Slide 13 (Answer) / 38 11 Which of the following graphs depicts the acceleration of 11 Which of the following graphs depicts the acceleration of a runner speeding up to pass someone. a runner speeding up to pass someone. Y Y Y Y B B A A Speed (m/s) Speed (m/s) Speed (m/s) Speed (m/s) x x x x Time (s) Time (s) Time (s) Time (s) C Answer Answer Y Y Y Y C Speed (m/s) C Speed (m/s) D Speed (m/s) D Speed (m/s) x x x [This object is a pull x tab] Time (s) Time (s) Time (s) Time (s)

Slide 14 / 38 Slide 14 (Answer) / 38 12 Which of the following speed vs time graphs 12 Which of the following speed vs time graphs depicts the position vs time graph depicts the position vs time graph shown in the graph below? shown in the graph below? A Answer A Answer [This object is a pull tab] [This object is a pull tab] C C A A B B Slide 15 / 38 Slide 15 (Answer) / 38 13 A ball is traveling down a hill at 4 m/s. If the 13 A ball is traveling down a hill at 4 m/s. If the ball increases in speed to 8 m/s in 4 ball increases in speed to 8 m/s in 4 seconds, what is the acceleration of the seconds, what is the acceleration of the ball? ball? A 4 m/s A 4 m/s B 4 m/s/s B 4 m/s/s Answer Answer D C 1 m/s C 1 m/s D 1 m/s/s D 1 m/s/s [This object is a pull tab] Slide 16 / 38 Slide 16 (Answer) / 38 14 Forces are all around us. Which of the 14 Forces are all around us. Which of the following do you think are examples of following do you think are examples of forces? (choose all that apply) forces? (choose all that apply) A Gravity A Gravity A & B Answer Answer B Friction B Friction C Muscles C Muscles [This object is a pull tab] D Wind D Wind

Slide 17 / 38 Slide 17 (Answer) / 38 15 What is the SI unit for force? 15 What is the SI unit for force? A Pounds A Pounds B Kilograms B Kilograms Answer Answer C C Newtons C Newtons [This object is a pull tab] Slide 18 / 38 Slide 18 (Answer) / 38 16 A +20 N force acts on a car and at the 16 A +20 N force acts on a car and at the same time, a -30 N force acts on the car. same time, a -30 N force acts on the car. What is the net force acting on the car What is the net force acting on the car and is it balanced? and is it balanced? A -30 N unbalanced A -30 N unbalanced B B -10 N unbalanced Answer B -10 N unbalanced Answer C -10 N balanced C -10 N balanced [This object is a pull D + 30 balanced D + 30 balanced tab] Slide 19 / 38 Slide 19 (Answer) / 38 17The force of gravitation between an object 17The force of gravitation between an object and a planet is increased as they move and a planet is increased as they move away from each other: away from each other: True True False False False Answer Answer [This object is a pull tab]

Slide 20 / 38 Slide 20 (Answer) / 38 18 A 100 kg kid is on the moon, where g = 18 A 100 kg kid is on the moon, where g = 1.67 m/s 2 . What is the boy's weight? 1.67 m/s 2 . What is the boy's weight? A 83.5 kg A 83.5 kg B 167 kg B 167 kg C 167 N C 167 N C Answer Answer D 29.9 N D 29.9 N [This object is a pull tab] Slide 21 / 38 Slide 21 (Answer) / 38 19 What is the net force acting on the object 19 What is the net force acting on the object below? below? -10 N -10 N Answer Answer -11 N 7 N 7 N [This object is a pull tab] -8 N -8 N Slide 22 / 38 Slide 22 (Answer) / 38 20 Is the object in equilibrium? 20 Is the object in equilibrium? Yes Yes No No -10 N -10 N Answer Answer No 7 N 7 N [This object is a pull tab] -8 N -8 N

Slide 23 / 38 Slide 23 (Answer) / 38 21 What is the net force acting on the object 21 What is the net force acting on the object below? below? -10 N -10 N Answer Answer 0 N 25 N 25 N [This object is a pull tab] -15N -15N Slide 24 / 38 Slide 24 (Answer) / 38 22 Is the object in equilibrium? 22 Is the object in equilibrium? Yes Yes No No -10 N -10 N Answer Answer 25 N 25 N Yes [This object is a pull tab] -15N -15N Slide 25 / 38 Slide 25 (Answer) / 38 23 Acceleration due to gravity on Jupiter is 23 Acceleration due to gravity on Jupiter is 26.1 m/s 2 . How much would a 25 kg 26.1 m/s 2 . How much would a 25 kg person weigh on Jupiter? person weigh on Jupiter? 653 N Answer Answer [This object is a pull tab]