2nd 9 Week Test Review

Front

What is the formula to calculate net force?

Back

Net Force (F) = mass (m) × acceleration (a)

Front

How do you calculate average speed?

Back

Average Speed = total distance / total time

Front

What does the H-R diagram represent in astronomy?

Back

The H-R diagram plots stars according to their brightness and temperature.

Front

What is the net force when two equal forces act in opposite directions?

Back

The net force is 0N.

Front

What is Newton's First Law of Motion?

Back

An object at rest stays at rest, and an object in motion stays in motion unless acted upon by a net external force.

Front

What is Newton's Second 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.

Front

What is Newton's Third Law of Motion?

Back

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

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity of an object.

Front

How do you convert mph to m/s?

Back

To convert mph to m/s, multiply by 0.44704.

Front

What is the significance of mass in the equation F = ma?

Back

Mass is a measure of the amount of matter in an object and affects how much force is needed to accelerate it.