Velocity and Acceleration

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

True or False: Acceleration only occurs when an object speeds up.

Back

False. Acceleration can occur when an object speeds up, slows down, or changes direction.

Front

What is the formula for calculating acceleration?

Back

Acceleration (a) = (Final Velocity (v) - Initial Velocity (u)) / Time (t)

Front

What is the SI unit for acceleration?

Back

The SI unit for 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 is velocity?

Back

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

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 the SI unit for measuring distance?

Back

The SI unit for measuring distance is the meter (m).

Front

Which of the following is a unit of velocity?

Back

m/s (meters per second) is a unit of velocity.

Front

If a cyclist travels 100 meters in 5 seconds, what is their average speed?

Back

Average speed = Total distance / Total time = 100 m / 5 s = 20 m/s.