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 average acceleration calculated?

Back

Average acceleration is calculated using the formula: (final velocity - initial velocity) ÷ time.

Front

What is the unit of acceleration in the International System of Units (SI)?

Back

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

Front

If an object is moving at a constant speed, what is its acceleration?

Back

If an object is moving at a constant speed, its acceleration is 0 m/s².

Front

What does a negative acceleration indicate?

Back

Negative acceleration indicates that an object is slowing down.

Front

A car accelerates from 20 m/s to 50 m/s in 10 seconds. What is its acceleration?

Back

Acceleration = (50 m/s - 20 m/s) ÷ 10 s = 3 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 happens to the acceleration of an object if the net force acting on it is zero?

Back

If the net force acting on an object is zero, its acceleration is also zero, meaning it will maintain its current state of motion.

Front

A cyclist slows down from 15 m/s to 5 m/s in 2 seconds. What is the acceleration?

Back

Acceleration = (5 m/s - 15 m/s) ÷ 2 s = -5 m/s².

Front

What is uniform acceleration?

Back

Uniform acceleration occurs when an object's acceleration is constant over time.