Acceleration Practice

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity of an object. It is a vector quantity, meaning it has both magnitude and direction.

Front

What are the units of acceleration?

Back

The units of acceleration are meters per second squared (m/s²).

Front

How do you calculate acceleration?

Back

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

Front

If a car accelerates from 20 m/s to 50 m/s in 5 seconds, what is its acceleration?

Back

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

Front

What does a negative acceleration indicate?

Back

Negative acceleration, also known as deceleration, indicates that an object is slowing down.

Front

A bicycle accelerates from rest to 18 m/s in 6 seconds. What is the acceleration?

Back

Acceleration = (18 m/s - 0 m/s) / 6 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

A train travels at a constant speed of 80 m/s. What is its acceleration?

Back

The acceleration is 0 m/s² because the speed is constant.

Front

If an object is at rest and then accelerates to a speed of 30 m/s in 10 seconds, what is its acceleration?

Back

Acceleration = (30 m/s - 0 m/s) / 10 s = 3 m/s².

Front

What is uniform acceleration?

Back

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