Ms. Ball: Physics; Chapter 6
A ball with a momentum of 4.0 kg•m/s hits a wall and bounces straight back without losing any kinetic energy. What is the change in the ball's momentum?
8.0 kg•m/s
If a force is exerted on an object, which statement is true?
A small force applied over a long time interval can produce a large change in the object's momentum.
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?
It comes to rest.
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
The child has a greater momentum than the bike.
When comparing the momentum of two moving objects, which of the following is correct?
The less massive object will have less momentum if the velocities are the same.
A 75 kg person walking around a corner bumped into an 80 kg person who was running around the same corner. The momentum of the 80 kg person
decreased
Two billiard balls collide. Identify the type of collision.
elastic
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
is greater down the hill than up the hill.
The impulse experienced by a body is equivalent to the body's change in
momentum.
In a two-body collision
neither momentum nor kinetic energy is conserved
Two objects stick together and move with a common velocity after colliding. Identify the type of collision.
perfectly inelastic
In an inelastic collision between two objects with unequal masses,
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 that
the total momentum of all objects interacting with one another remains constant regardless of the nature of the forces between the objects.
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,
their momenta are equal but opposite
