Acceleration

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

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 flat line on a velocity-time graph indicate?

Back

A flat line indicates that the object is moving at a constant velocity.

Front

What does a positive slope on a velocity-time graph represent?

Back

A positive slope indicates that the object is accelerating (speeding up).

Front

What does a negative slope on a velocity-time graph represent?

Back

A negative slope indicates that the object is decelerating (slowing down).

Front

If a car accelerates from 0 to 20 m/s in 4 seconds, what is its acceleration?

Back

Acceleration = (20 m/s - 0 m/s) / 4 s = 5 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.

Front

What does it mean if an object has zero acceleration?

Back

Zero acceleration means the object is either at rest or moving at a constant velocity.

Front

What is the formula for calculating final velocity?

Back

Final velocity (v) can be calculated using the formula: v = initial velocity + (acceleration × time).