Force & Motion STAAR Review

Front

What is the relationship between mass and acceleration according to Newton's Second Law?

Back

A rocket with less mass will have a greater acceleration when the same force is applied.

Front

Define balanced forces.

Back

Balanced forces are forces that have a net force of zero, meaning they do not cause a change in motion.

Front

What is the unit of force?

Back

The unit to measure force is the Newton (N).

Front

What does Newton's Second Law state?

Back

Newton's Second Law states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.

Front

What happens to an object at rest when a balanced force is applied?

Back

An object at rest will remain at rest when balanced forces are applied.

Front

What is the effect of unbalanced forces on an object?

Back

Unbalanced forces cause an object to accelerate in the direction of the net force.

Front

What is inertia?

Back

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

Front

How does friction affect motion?

Back

Friction is a force that opposes motion, causing objects to slow down or stop.

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 is acceleration?

Back

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