Acceleration

Front

What is Acceleration?

Back

A change in Motion.

Front

How is acceleration calculated?

Back

Acceleration is calculated using the formula: \( a = \frac{\Delta v}{\Delta t} \), where \( \Delta v \) is the change in velocity and \( \Delta t \) is the time taken.

Front

What is the unit of acceleration?

Back

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

Front

If an object is moving to the left and slowing down, what is the direction of its acceleration?

Back

The acceleration is in the positive direction (to the right) because it is opposite to the direction of motion.

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 continuously changing.

Front

A car accelerates from 20 m/s to 60 m/s in 4 seconds. What is the acceleration?

Back

Acceleration = \( \frac{60 m/s - 20 m/s}{4 s} = 10 m/s² \).

Front

What is the difference between speed and acceleration?

Back

Speed is the rate of change of distance, while acceleration is the rate of change of velocity.

Front

If a drag racer accelerates at 40 m/s² for 5 seconds, what is the final velocity if the initial velocity is 0 m/s?

Back

Final velocity = Initial velocity + (Acceleration × Time) = 0 + (40 m/s² × 5 s) = 200 m/s.

Front

What does a negative acceleration indicate?

Back

Negative acceleration indicates that an object is slowing down.

Front

What is uniform acceleration?

Back

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