Before After

Two blocks, m1 = 1.50 kg and m2 = 3.00 kg, are traveling to the right along africtionless surface. Block m1, moving 4.00 m/s, catches up to block m2, moving 2.50 m/s, and the two blocks undergo an elastic collision.(a) Determine the velocity of each block after the collision. (b) Prove that the collision was, in fact, elastic.

Two titanium spheres approach each other head-on with the same speed and collide elastically. After the collision, one of the spheres, whose mass is 480 g, remains at rest. (a) What is the mass of the other sphere? (b) What is the speed of the two-sphere center of mass if the initial speed of each sphere is 4.7 m/s?

A block of mass m1 = 2 kg and speed v1 = 0.40 m/s collides with a block of mass m2 = 5 kg that is initially at rest. If the two blocks stick together, what is their speed right after the collision?

A 20.0-kg object has an eastward momentum of 120 kg m/s. The object encounters a westward impulse of 40 N s. What is the magnitude of the final momentum of the object?

A 0.145 kg baseball is pitched at 42 m/s to the right. The batter hits it horizontally to the pitcher at 58 m/s.(Zitzewitz et.al., 2006)A. Find the change in momentum of the ball.B. If the ball and bat are in contact for 4.6x10¯ 4 s, what is the average force duringthe contact?

Consider a mass with mass m = 400 g (e.g., a soccer ball). Assume that the ball is moving to the left with velocity v1 = -20 m/s after being kicked towards a solid wall, that is oriented vertically. Assume that during the collision, the ball interacts with the wall for 1 msec. After the collision with the wall, the ball moves in the positive x-direction with velocity v2 = 10 m/s. Calculate the impulse, Jx. Also calculate the average force, Fav, that the ball exerts on the wall.

(ODC-1) Consider two hockey pucks, each with mass 1.25 kg, on frictionless ice. Puck A is initially moving due east at 2.35 m/s towards puck B, which is initially stationary. The pucks. collide head on. After the collision, puck B moves east with a speed of 1.45 m/s. (a) What is puck A's speed (in m/s) after collision? What direction is it moving in? (b) How much kinetic energy (in Joules) is lost from the system during the collision? (c) If the collision were completely elastic, what wold the final speed and direction of each puck be? (CM-1) Calculate the (x v) position of the center of mass of the 4 particles shown below

A young 44-kg ice hockey goalie, originally at rest, deflects a 0.145-kg hockey puck slapped at him at a speed of 37 m/s. In this problem, take the original direction of the puck as positive. Suppose the goalie and the ice puck have an elastic collision and the puck is reflected back in the direction from which it came. What would the final velocity of the puck, in meters per second, be in this case?  Suppose the goalie and the ice puck have an elastic collision and the puck is reflected back in the direction from which it came. What would the final velocity, in meters per second, of the goalie be in this case?