Acceleration

Front

What is acceleration?

Back

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

Front

What is the formula for calculating acceleration?

Back

The formula for acceleration (a) is: a = (final velocity - initial velocity) / time.

Front

What are the units of acceleration?

Back

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

Front

If an object is not moving, what is its acceleration?

Back

If an object is not moving, its acceleration is 0 m/s².

Front

How do you calculate the acceleration of a drag racer that goes from 0 m/s to 200 m/s in 5 seconds?

Back

Using the formula a = (final velocity - initial velocity) / time, we have a = (200 m/s - 0 m/s) / 5 s = 40 m/s².

Front

What is the acceleration of a box sliding down an inclined plane that reaches 27 m/s in 3 seconds from rest?

Back

Using the formula a = (final velocity - initial velocity) / time, we have a = (27 m/s - 0 m/s) / 3 s = 9 m/s².

Front

How do you determine the acceleration of a car that starts from rest and reaches 20 m/s in 3.5 seconds?

Back

Using the formula a = (final velocity - initial velocity) / time, we have a = (20 m/s - 0 m/s) / 3.5 s = 5.7 m/s².

Front

What is the acceleration of a roller coaster that accelerates from 6.0 m/s to 70 m/s over 4 seconds?

Back

Using the formula a = (final velocity - initial velocity) / time, we have a = (70 m/s - 6.0 m/s) / 4 s = 16 m/s².

Front

What does a positive acceleration indicate about an object's motion?

Back

A positive acceleration indicates that an object is speeding up or increasing its velocity.

Front

What does a negative acceleration (deceleration) indicate about an object's motion?

Back

A negative acceleration indicates that an object is slowing down or decreasing its velocity.