REVIEW: Forces & Motion

Front

What is Newton's 1st Law of Motion?

Back

An object at rest stays at rest, and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

Front

What is Newton's 2nd Law of Motion?

Back

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

For every action, there is an equal and opposite reaction.

Front

What does a solid horizontal slope in a distance-time graph represent?

Back

The object is not moving.

Front

What is gravity?

Back

The force of attraction between two objects, which increases as the mass of the objects increases and decreases as the distance between the objects increases.

Front

How do you calculate the net force when two forces are acting in opposite directions?

Back

You subtract the smaller force from the larger force.

Front

What is friction?

Back

A force that opposes the motion of an object, acting parallel to the surfaces in contact.

Front

What are balanced forces?

Back

Forces that are equal in size and opposite in direction, resulting in no change in motion.

Front

What are unbalanced forces?

Back

Forces that are not equal and opposite, causing a change in motion.

Front

What is acceleration?

Back

The rate of change of velocity of an object, which can be caused by a change in speed or direction.