Velocity & Acceleration

Front

What is velocity?

Back

Velocity is the speed of an object in a specific direction.

Front

What is acceleration?

Back

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

Front

How is acceleration calculated?

Back

Acceleration is calculated as the change in velocity divided by the time interval: a = (v_f - v_i) / t.

Front

What is the unit of acceleration?

Back

The unit of acceleration is meters per second squared (m/s²).

Front

If a car's velocity changes from 10 m/s to 30 m/s in 5 seconds, what is its acceleration?

Back

Acceleration = (30 m/s - 10 m/s) / 5 s = 4 m/s².

Front

What does it mean when an object has a negative acceleration?

Back

Negative acceleration indicates that the object is slowing down.

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

If a tornado is traveling northwest at 20 mph, what type of measurement is this?

Back

This is a measurement of velocity.

Front

What happens to the acceleration of an object moving in a circular path?

Back

The object is constantly accelerating because its direction is changing, even if its speed remains constant.

Front

What is the formula for calculating average speed?

Back

Average speed = total distance / total time.