Momentum and Collision Review
Two objects move separately after colliding, and both the total momentum and total kinetic energy remain constant. Identify the type of collision.
Elastic
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, ...?
The less massive object gained momentum
When comparing the momentum of two moving objects, which of the following is correct?
The less massive object will have less momentum if its velocity is greater.
Two billiard balls of equal mass are travelling straight toward each other with the same speed. They meet head-on in an elastic collision. Describe how the velocities of the balls change as a result of the collision.
after collision same speed as initial but moving in opposite directions
Which has a greater momentum- a truck with a mass of 2250 kg moving at a speed of 25 m/s or a car with a mass of 1210 kg moving at a speed of 51 m/s.
car is greater
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...?
decreases
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
Which of the following best describes the momentum of two bodies after a two-body collision if the kinetic energy of the system is conserved?
must also be conserved
Two objects stick together and move with a common velocity after colliding. Identify the type of collision.
perfectly inelastic
Compare the momentum of a 6160 kg truck at 3.00 m/s to the momentum of a 1540 kg car moving at 12.0 m/s.
same momentum
The change in an object's momentum is equal to?
the product of the force applied to the object and the time interval
The Law of Conservation of Momentum states?
the total momentum of all objects interacting with one another remains constant regardless of the nature of the forces between the objects.
Two billiard balls of equal mass are traveling straight toward each other with the same speed. They meet head-on in an elastic collision. What is the total momentum of the system containing the two balls before the collision?
zero
