1. A sinall, 100.0 g cart is moving at 1.20 m/s on an air track when it collides with a larger, 1.00 kg cart at rest. After the collision, the small cart recoils at 0.850 m/s. What is the speed of the large cart after the collision?

11. Each croquet ball in a set has a mass of 0.53kg. The green ball, traveling at 11.9 m/s, strikes the blue ball, which is at rest. Assuming that the balls slide on a frictionless surface and all collisions are head-on, find the final speed of the blue ball if the green ball continues moving after the collision at 2.5 m/s in the same direction.

A simple pendelum made of a pendelum bob of mass, m1=.0250 kg, and a string of length, l= .720m, is pulled back to an angle of theta = 35 degrees and then released from rest. At the bottom of the swing m1 and m2=.0200 kg collide and stick together. a. What is the speed of m1 immediately before it hits m2? b. What is the speed of m2 immediately after the collision? c. How high above the bottom of the swing do the two masses rise?

8. Martha, whose mass is 42 kg is traveling on her roller blades at 8 m/s, when she collides with Juan, who is also on roller blades, at rest, and has a mass of 60 kg. Assuming that Martha and Juan move together after they collide, what is their velocity after the collision? 9. A 20 kg suitcase is thrown from the top of a 20 meter building with a speed of 8 m/s. a) With what speed will it reach the ground? b) What speed does the suitcase have when it is 5 m above the ground? (Hint: note the suitcase initially has both PE and KE.) (9)

A truck with a mass of 1600 kg and moving with a speed of 13.5 m/s rear-ends a 585 kg car stopped at an intersection. The collision is approximately elastic since the car is in neutral, the brakes are off, the metal bumpers line up well and do not get damaged. Find the speed of both vehicles after the collision in meters per second. V car 6.27 m/s V truck = 19.77 X m/s