Newton's Laws of Motion Test Review

What is terminal velocity?

Speed, direction, and acceleration of an object

What is momentum?

Property of a moving object that equals its mass times velocity

What is gravity?

the attractive force between two objects

What is the difference between mass and weight?

• Weight measures the gravitational pull of an object

• Mass measures the amount of matter in an object

What is the law of inertia

an object or mass will remain either at rest or in motion in the same direction, unless acted upon by an unbalanced force

What is the equation for momentum?

P = M x V

What are the units for momentum?

kg x m/s

What is centripetal acceleration?

an object will accelerate on a curved path

What is centripetal force?

the net force applied to an object traveling in a circular path

What is the law of conservation of momentum?

when objects exert forces only on each other, the total amount of momentum stays the same

What is Newton’s 1st law?

An object at rest will stay at rest and an object in motion will stay in motion

What is Newton’s 2nd law?

The acceleration of an object is in the same direction as the net force on the object

What does the amount of gravitation force between objects depend on?

Mass and distance between them

What path will a projectile always follow?

a curved path

What is Newton’s 3rd law?

Equal but opposite reaction to an action

What keeps planets in orbit?

Inertia and gravity

What is the acceleration due to gravity?

9.8 m/s

What does the inertia of an object depend on?

Mass and gravitational pull