Acceleration Practice Problems

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

What is the formula for calculating acceleration?

Back

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

Front

If an object has a negative acceleration, what does that indicate?

Back

Negative acceleration indicates that the object is slowing down.

Front

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

Back

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

Front

How does acceleration relate to velocity?

Back

Acceleration is the change in velocity over time. If velocity increases, acceleration is positive; if velocity decreases, acceleration is negative.

Front

What happens to the acceleration of an object moving in a circular path at constant speed?

Back

The object experiences acceleration because its direction is changing, even though its speed remains constant.

Front

Calculate the final velocity of a car that starts at 190 m/s and decelerates at -8.9 m/s² for 20 seconds.

Back

Final velocity = initial velocity + (acceleration × time) = 190 m/s + (-8.9 m/s² × 20 s) = 12 m/s.

Front

A dog slides to a stop from an initial speed of 7.5 m/s in 15 seconds. What is the acceleration?

Back

Acceleration = (final velocity - initial velocity) / time = (0 m/s - 7.5 m/s) / 15 s = -0.5 m/s².

Front

If a horse accelerates from 15 m/s to 42 m/s at 9 m/s², how long does it take?

Back

Time = (final velocity - initial velocity) / acceleration = (42 m/s - 15 m/s) / 9 m/s² = 3 s.

Front

What is the acceleration of a football thrown at 40 m/s over 5 seconds?

Back

Acceleration = (final velocity - initial velocity) / time. Assuming initial velocity is 0, a = (40 m/s - 0) / 5 s = 8 m/s².