Physics Review Sheet for Chapter 6

Define the following. Include variables, SI Units and any formulas used:

  1. Elastic collision:
  1. Impulse:
  1. Impulse-Momentum Theorem:
  1. The Law of Conservation of Momentum:
  1. Momentum:
  1. Perfectly Inelastic collision:
  1. The SI unit for momentum:
  1. A 25 kg child is riding a 6.2 kg bike with a velocity of 5.2 m/s. Find the momentum of the child and the bike together.
  1. A 0.37 kg soccer ball approaches a player horizontally with a velocity of 15 m/s to the North. The player strikes the ball and causes it to move in the opposite direction with a velocity of 20.5 m/s. What impulse was delivered to the ball by the player?
  1. A 2250 kg car traveling to the south is slowed down uniformly from an initial velocity of 15.0 m/s by a 6050 N force acting opposite the car’s motion.
  2. Use the impulse-momentum theorem to find how long it takes for the car to come to a complete stop?
  1. How far would the car move before stopping?
  1. A 52.0 kg cosmonaut is on a spacewalk when the tether line to the shuttle breaks. The astronaut is able to throw a 11.0 kg oxygen tank in a direction away from the shuttle with a speed of 14.0 m/s, propelling the astronaut back to the shuttle. Assuming that the astronaut starts from rest, find the final speed of the astronaut after throwing the tank.
  1. A 78.0 kg fisherman jumps from a dock into a 132.0 kg rowboat at rest on the east side of the dock. If the velocity of the fisherman is 5.20 m/s to the east as he leaves the dock, what is the final velocity of the fisherman and the boat.
  1. A 73.0 kg astronaut is on a spacewalk when the tether line to the shuttle breaks. The astronaut is able to throw a 15.0 kg oxygen tank in a direction away from the shuttle with a speed of 14.0 m/s, propelling the astronaut back to the shuttle. Assuming that the astronaut starts from rest, find the final speed of the astronaut after throwing the tank.
  1. An 87.0 kg fisherman jumps from a dock into a 147.0 kg rowboat at rest on the east side of the dock. If the velocity of the fisherman is 4.50 m/s to the east as he leaves the dock, what is the final velocity of the fisherman and the boat?
  1. A 19 kg child is riding a 5.5 kg bike with a velocity of 4.2 m/s. Find the momentum of the child and the bike together.
  1. A 0.43 kg soccer ball approaches a player horizontally with a velocity of 19 m/s to the North. The player strikes the ball and causes it to move in the opposite direction with a velocity of 23.0 m/s. What impulse was delivered to the ball by the player?
  1. A 3225 kg car traveling to the south is slowed down uniformly from an initial velocity of 25.0 m/s by a 6095 N force acting opposite the car’s motion.
  2. Use the impulse-momentum theorem to find how long it takes for the car to come to a complete stop?
  1. How far would the car move before stopping?