Acceleration

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity of an object with respect to time.

Front

What is the formula for average acceleration?

Back

Average acceleration = (final velocity - initial velocity) ÷ time.

Front

When does a car have no acceleration?

Back

A car has no acceleration when it moves at a constant speed in a straight line, such as a car with cruise control set at a constant speed.

Front

What does a negative acceleration indicate?

Back

Negative acceleration indicates that an object is slowing down.

Front

What is the unit of acceleration in the SI system?

Back

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

Front

If a car speeds up 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 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 is in free fall?

Back

An object in free fall is only under the influence of gravity, with no other forces acting on it.

Front

How does friction affect acceleration?

Back

Friction opposes motion and can reduce the acceleration of an object.

Front

What is uniform acceleration?

Back

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