Ganado Physics Chapter 6 Test Review
Which of the following situations is an example of a significant change in momentum?
Answer: A, A tennis ball is hit into a net.
Which of the following equations can be used to directly calculate an object's momentum, p?
Answer: A, P=mv
Which of the following has the greatest momentum?
Answer: A, a tortoise with a mass of 275 kg moving at a velocity of 0.55 m/s
In a two-body collision, _____
Answer: A, momentum is always conserved.
A person sitting in a chair with wheels stands up, causing the chair to roll backward across the floor. The momentum of the chair ________
Answer: A, was zero while stationary and increased when the person stood up.
A 20kg shopping cart moving at a velocity of 0.5 m/s collides with a store wall and stops. The momentum of the shopping cart ________
Answer: B, decreases.
A roller coaster climbs up a hill at 4 m/s and then zips down the hill at 30 m/s. The momentum of the roller coaster __________________.
Answer: B, is greater down the hill than up the hill.
The change in an object's momentum is equal to _____-
Answer: B, the product of the force applied to the object and the time interval.
Two skaters stand facing each other. One skater's mass is 60 kg, and the other's mass is 72 kg. If the skaters push away from each other without spinning _____
Answer: B, their momenta are equal but opposite.
Two swimmer relax close together on an air mattress in a pool. One swimmer's mass is 48 kg, and the other's mass is 55 kg. If the swimmers push away from each other, ____
Answer: B, their momenta are equal but opposite.
The impulse experienced by a body is equivalent to the body's change is ___
Answer: C, Momentum.
A child with a mass of 23 kg rides a bike with a mass of 5.5 kg at a velocity of 4.5 m/s to the south. Compare the momentum of the child with the momentum of the bike
Answer: C, The child has a greater momentum than the bike.
When comparing the momentum of two moving objects, which of the following is correct?
Answer: C, The less massive object will have less momentum if the velocities are the same.
Two billiard balls collides. Identify the type of collision.
Answer: C, elastic.
A billiard ball collides with a stationary identical billiard ball in an elastic head-on collision. After the collision, which of the following is true of the first ball?
Answer: C, it comes to rest.
What are the SI units for momentum?
Answer: C, kg times m/s
A rubber ball moving at a speed of 5 m/s hit a flat wall and returned to the thrower at 5 m/s. The magnitude of the momentum of the rubber ball _______
Answer: C, remained the same.
A soccer ball collides with another soccer ball at rest. The total momentum of the balls ____
Answer: C, remains constant
Which of the following situations is an example of a visible change in momentum?
Answer: D, A baseball is hit by a bat.
Two objects stick together and move with a constant velocity after colliding. Identify the type of collision.
Answer: D, Perfectly inelastic
Which of the following equations can be used to directly calculate the change in an object's momentum?
Answer: D, Triangle p = F times triangle t
Two balls of dough collide and stick together. Identify the type of collision.
Answer: D, perfectly inelastic.
In an inelastic collision between two objects with unequal masses, ______
Answer: D, the momentum of one object will increase by the amount that the momentum of the other object decreases.
The law of conservation of momentum states ________
Answer: D, the total momentum of all objects interacting with one another remains constant regardless of the nature of the force between the objects.
Two objects with different masses collide and bounce back after an elastic collision. Before the collision, the two objects were moving at velocities equal in magnitude but opposite in direction. After the collision, ______
Answer:A, the less massive object had gained momentum.
