Momentum Answers

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?

A bowling ball collides with a pin and pushes the pin toward the right. Which describes the reaction force?

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

The chart shows masses and velocities of four objects.

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

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

What is the momentum of a 5 kg object that has a velocity of 1.2 m/s?

Sheila weighs 60 kg and is riding a bike. Her momentum on the bike is 340 kg • m/s. The bike hits a rock, which stops it completely and throws Sheila forward onto the pavement.If there is no net force on the system, what is Sheila’s velocity immediately after she is thrown from the bike?

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?

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