Lesson 4 Newton's 3rd Law Review

Force pairs are equal forces that act in (a)   directions.

• equal
• mass
• opposite
• reaction
• same

Momentum is found by multiplying an object’s _____ by its velocity.

A force pair is made up of an action force and a (a)   force.

• equal
• opposite
• reaction
• action

What type of collision is involved when a tennis racket strikes a tennis ball?

• A. elastic

• B. inelastic

• C. accelerated

• D. momentum

The law of conservation of momentum states that the total momentum of a group of objects (a)   after a collision.

• A. increases after a collision.
• B. decreases after a collision.
• C. remains the same after a collisi

Match the following terms with their corresponding effects.

• The amount of matter in an object

• C. friction

• A force that resists motion between two surfaces

• B. inertia

• The resistance of any physical object to any change in its velocity

• A. mass

Momentum is (a)  

• The measure of how hard it is to st
• The speed of an object
• The direction of an object
• The weight of an object

A 1,500-kg truck is moving north at 10 m/s. Calculate the momentum of the truck.

• 15000 kg·m/s
• 1000kg·m/s

• 10000 kg·m/s

• 1500 kg·m/s

A truck is moving east with a momentum of 24,000 kg·m/s and a velocity of 20 m/s. What is the mass of the truck?

To calculate the momentum of an object you must:

• divide mass by velocity
• multiply mass by velocity
• add the mass by velocity
• subtract the mass by velocity