Acceleration

Front

What is acceleration?

Back

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

Front

How is acceleration calculated?

Back

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

Front

What is the unit of acceleration?

Back

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

Front

What does a positive acceleration indicate?

Back

A positive acceleration indicates that an object is speeding up.

Front

What does a negative acceleration indicate?

Back

A negative acceleration indicates that an object is slowing down.

Front

If a car's velocity changes from 20 m/s to 50 m/s in 5 seconds, what is the acceleration?

Back

Acceleration = (50 m/s - 20 m/s) / 5 s = 6 m/s².

Front

What is constant velocity?

Back

Constant velocity means that an object is moving at a steady speed in a straight line, with no acceleration.

Front

What does a flat section on a velocity-time graph represent?

Back

A flat section on a velocity-time graph represents constant velocity.

Front

What is the acceleration of an object at rest?

Back

The acceleration of an object at rest is 0 m/s².

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.