QuickCheck 11.11 The two boxes are on a frictionless surface. They - PowerPoint PPT Presentation

QuickCheck 11.11 The two boxes are on a frictionless surface. They had been sitting together at rest, but an explosion between them has just pushed them apart. How fast is the 2 kg box going? A. 1 m/s B. 2 m/s C. 4 m/s D. 8 m/s There’s not enough information to tell. E. Slide 11-1

QuickCheck 11.12 A cart is rolling at 5 m/s. A heavy lead weight is suspended by a thread beneath the cart. Suddenly the thread breaks and the weight falls. Immediately afterward, the speed of the cart is A. Less than 5 m/s B. Still 5 m/s C. More than 5 m/s Slide 11-2

11.48 One billiard ball is shot east at 2.0 m/s. A second, identical billiard ball is shot west at 1.0 m/s. The balls have a glancing collision, not a head-on collision, deflecting the second ball by 90 degrees and sending it north at 1.41 m/s. (a) What are the speed and direction of the first ball after the collision? (b) Is this an elastic collision?

11.57 A block of mass m slides along a frictionless track with speed v m . It collides with a stationary mass M . Find an expression for the minimum value of v m that will allow the second block to circle the loop-the-loop without falling off is the collision is: (a) perfectly inelastic or (b) perfectly elastic.