Momentum Answers

Which formula can be used to express the law of conservation of momentum, where p = momentum?

The diagram shows two balls before they collide.

A NASA explorer spacecraft with a mass of 1,000 kg takes off in a positive direction from a stationary asteroid.If the velocity of the spacecraft is 250 m/s and the asteroid is pushed back –25 m/s, what is the mass of the asteroid? Assume there is no net force on the system.

The law of conservation of momentum states that, if left alone, what happens to the total momentum of two interacting objects that make up a system?

The chart shows masses and velocities of four objects.

When someone throws a ball, the action force is the person pushing on the ball. What is the reaction force?

The chart show the masses and velocities of two colliding objects that stick together after a collision.

According to Newton’s third law of motion, which are equal?

A 50 kg pitcher throws a baseball with a mass of 0.15 kg. If the ball is thrown with a positive velocity of 35 m/s and there is no net force on the system, what is the velocity of the pitcher?

A car has a momentum of 20,000 kg • m/s. What would the car’s momentum be if its velocity doubles?

Football helmets are made with padding that helps reduce head injuries when a player collides with an object. Which best explains how the padding reduces injuries?

Denise is riding her bike and falls to the ground. During the collision, she hits both grass and cement.

Two carts collide and bounce apart. Cart 1 had a momentum of –6 kg • m/s before the collision. Cart 2 had a momentum of 10 kg • m/s before the collision.

The chart lists the masses of four balls that have the same momentum.