Unit 2--Changes in Force and Motion

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity of an object. It can be positive (speeding up) or negative (slowing down).

Front

What does a constant velocity mean?

Back

Constant velocity means an object is moving at the same speed in a straight line without changing direction.

Front

What is Newton's Third Law of Motion?

Back

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

Front

How do you calculate acceleration?

Back

Acceleration can be calculated using the formula: a = (final velocity - initial velocity) / time.

Front

What is the unit of force?

Back

The unit of force is the Newton (N).

Front

What happens when two forces are equal and opposite?

Back

When two forces are equal and opposite, they cancel each other out, resulting in no net force and no acceleration.

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 it mean for an object to be in motion?

Back

An object is in motion if its position changes relative to a reference point over time.

Front

What is the formula for calculating force?

Back

Force can be calculated using the formula: F = mass x acceleration (F = m * a).

Front

What is the significance of a velocity-time graph?

Back

A velocity-time graph shows how the velocity of an object changes over time, allowing us to analyze its motion.