A 68 kg ice hockey goalie, originally at rest, catches a .111 kg hockey puck slapped at him at a velocity of 33 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. Hint: You will need to conserve energy and momentum to solve this problem. (a) What is the final velocity of the puck in m/s? Number (b) What is the final velocity of the goalie in m/s? Number

A 10 gram bullet is fired from a gun and embeds itself into a 1.0 kg block of wood. After the collision the block of wood skids away at 4.0 m/s. What was the initial speed of the bullet?

A 0.17-kg red billiard ball moving at 1.6 m/s strikes a blue billiard ball of the same mass moving in the opposite direction at 0.50 m/s. The blue billiard ball rebounds and travels at 0.80 m/s after the head-on collision. What is the final velocity of the red billiard ball after collision? 0.15 m/s 0.30 m/s 0.42 m/s 0.06 m/s

A 330.0 g bird flying along at 8.10 m/s sees a 17.0 g insect heading straight toward it with a speed of 26.0 m/s. The bird opens its mouth wide and enjoys a nice lunch. What is the bird's speed (in m/s) immediately after swallowing?

A pitcher throws a 0.60 kg ball of clay at a 2.0 kg block of wood. The clay sticks to the wood on impact, and their joint velocity afterward is 2.0 m/s. What was the original speed of the clay (in m/s)?

Two sumo wrestlers are in a match and at the start, they both lunge at each other.  When they hit each other they miraculously come to a stand still.  The first wrestler had a mass of 196 kg and was traveling at a velocity of 2.3 m/s at the instance of the collision.  a) If the second wrestler was traveling at 2.7 m/s at the moment of the collision, what was his mass in kg?

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)

1a. lb. lc. Define momentum p. Show that momentum is conserved in the absence of external force. Consider a totally elastic collision between a hydrogen atom of mass mi and a helium atoms of mass m2 (see figure 1). The initial velocity of mi and m2 is given to be vi and V2i while the scattered angles θ and Φ are also measured. Find the kinetic energy of the helium atom after the collision. Express your results in terms of m, m2, vii, v2i, d, and θ.