STAAR Review: Category 2 Force & Motion

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity that refers to how fast an object is moving, while velocity is a vector quantity that includes both speed and direction.

Front

What does Newton's Law of Inertia state?

Back

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 acceleration?

Back

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

Front

How do you calculate average speed?

Back

Average speed is calculated by dividing the total distance traveled by the total time taken.

Front

What is the formula for force?

Back

Force is calculated using the formula: Force = Mass x Acceleration (F = m*a).

Front

What is an unbalanced force?

Back

An unbalanced force is a force that causes an object to change its state of motion, resulting in acceleration.

Front

What happens to an object in motion when no forces act on it?

Back

It will continue to move at a constant velocity in a straight line.

Front

What is the relationship between mass and force?

Back

For a given acceleration, an object with greater mass will require a greater force to achieve that acceleration.

Front

What is the significance of direction in velocity?

Back

Direction is crucial in velocity because it differentiates it from speed; two objects can have the same speed but different velocities if they are moving in different directions.

Front

What is centripetal acceleration?

Back

Centripetal acceleration is the acceleration directed towards the center of a circular path, causing an object to move in a circle.