Force and Motion Study Guide

Front

What is net force?

Back

The net force is the overall force acting on an object when all the individual forces are combined. If the forces are unbalanced, the net force is NOT zero.

Front

What happens when forces are balanced?

Back

When forces are balanced, the net force is zero, and the object remains at rest or continues to move at a constant speed.

Front

What is gravitational force?

Back

Gravitational force is the attraction between two objects due to their mass. The strength of this force depends on the masses of the objects and the distance between them.

Front

Which object experiences the greatest gravitational force?

Back

The object with the greatest mass experiences the greatest gravitational force.

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity of an object. It can occur due to an increase or decrease in speed or a change in direction.

Front

What is Newton's 1st Law of Motion?

Back

Newton's 1st Law states that an object at rest will stay at rest, and an object in motion will stay in motion at a constant velocity unless acted upon by an unbalanced force.

Front

What is an example of inertia?

Back

An example of inertia is when you are standing in a subway train that suddenly stops, and your body continues to move forward.

Front

What is Newton's 2nd Law of Motion?

Back

Newton's 2nd Law states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass (F=ma).

Front

What is Newton's 3rd Law of Motion?

Back

Newton's 3rd Law states that for every action, there is an equal and opposite reaction.

Front

What is constant speed?

Back

Constant speed means that an object covers equal distances in equal intervals of time, regardless of how small those intervals are.