Mass stays the same from one place to the next, but weight can change.

Objects start to move on their own.

Your frame of reference is like your point of view.

A moving object changes its motion only when a force acts on it.

An object is accelerating only if it is speeding up.

The roller coaster does NOT accelerate as it slows down.

Objects cannot move back and forth as a vibration.

When picking a reference point, select an object that does NOT move.

To find the average speed of a moving object, divided the time by the distance the object travels.

a measure of how fast an object moves

measures how much matter is in an object

any push or pull

a place or object used to determine if an object is moving

a measure of how fast an object moves and the direction it is moving

the change in one object's position compared with another object's position

the force that pulls all objects toward each other

measures how strong the force of gravity is on an object

a change in position of an object

a change in the speed and direction that an object moves

Which object requires the least amount of force to move 5 meters?

On which object would the force of gravity be strongest?

What is needed to describe velocity?