STAAR Review: Category 2 Force & Motion

Front

What does Newton's Third Law state?

Back

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

Front

What happens to a skateboard when a person jumps off?

Back

The skateboard rolls backwards due to the equal and opposite force acting on it.

Front

What is the definition of acceleration?

Back

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

Front

What type of energy transformation occurs when a battery lights a flashlight?

Back

Chemical energy is transformed into light energy.

Front

What does a graph showing constant speed look like?

Back

A straight line with a positive slope.

Front

Why do we say a car accelerates when it goes around a corner?

Back

Because the car is changing direction, which is a change in velocity.

Front

What is friction?

Back

Friction is the force that opposes the motion of an object.

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity (magnitude only), while velocity is a vector quantity (magnitude and direction).

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion.

Front

What is the formula for calculating force?

Back

Force = mass × acceleration (F = ma).