A 1kg ball moving at a velocity of 12 m/s collides head on with a 2 kg ball moving at 24m/s in the opposite direction. calculate the velocity of each ball after collision if (a) e= 2/3, (b) the balls stick together, and (c) the collision is perfectly elastic.

A 2000 kg car moving east at 10.0 m/s collides with a 3000 kg car moving north. The cars stick together and move as a unit after the collision at an angle of 40.0° north of east. Find (a) the speed of the two cars after the collision and (b) the speed of the 3000 kg car before the collision.

You put an antimatter explosive in a 133 kg space rock, initially moving to the right at 34 m/s.  This time, upon detonation, the rock fractures into three pieces.  A 16 kg chunk is observed to zip off to the right (the positive direction) at 60 m/s.  A 69 kg chunk is observed to zip off to the left at 59 m/s.   Calculate the final velocity of the third chunk, in m/s. (Please answer to the fourth decimal place - i.e 14.3225)

Two balls of masses m, = 3.90 kg and m, = 1.60 kg move along the x axis. The initial velocities of the balls are VLj = 28.0 m/s and v2j = -12.0 m/s. The balls collide in a head-on elastic collision. Find the velocities of the balls after the collision. (a) First ball: V1,f m/s (b) Second ball:. V2,f = m/s

A billiard ball moving at 5.80 m/s strikes a stationary ball of the same mass. After the collision, the first ball moves at 4.81 m/s at an angle of 34.0° with respect to the original line of motion. Assuming an elastic collision (and ignoring friction and rotational motion), find the struck ball's velocity after the collision.

A 65.0 kg ice hockey goalie, originally at rest, catches a 0.150 kg hockey puck slapped at him at a velocity of 28.0 m/s. 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 their final velocities (in m/s) be in this case? (Assume the original direction of the ice puck toward the goalie is in the positive direction. Indicate the direction with the sign of your answer.) puck m/s goalie m/s

A 50 kg50 kg soccer player jumps vertically upwards and heads the 0.45 kg ball as it is descending vertically with a speed of 30 m/s. (a) If the player was moving upward with a speed of 4.0 m/s just before impact, what will be the speed of the ball immediately after the collision if the ball rebounds vertically upwards and the collision is elastic? (b) If the ball is in contact with the player's head for 21 m/s, what is the average acceleration of the ball? (Note that the force of gravity may be ignored during the brief collision time.)

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?

An archer fires a 120 g arrow at a velocity of +31.5 m/s toward an apple sitting on a stump. The arrow sticks into the apple and knocks it off the stump at a speed of +16.8 m/s. In kilograms, calculate the mass of the apple. Is this collision elastic or inelastic?

A steel ball of mass 0.5 kg is fastened to a cord that is 70.0 cm long and fixed at the far end. The ball is then released when the cord is horizontal. At the bottom of its path, the ball strikes a 2.5 kg steel block initially at rest on a frictionless surface. The collision is elastic. Find (a) the speed of the ball and (b) the speed of the block both just after the collision.