Physics Acceleration

Front

What is acceleration?

Back

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

Front

How is acceleration calculated?

Back

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

Front

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

Back

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

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 it mean when an object has zero acceleration?

Back

Zero acceleration means that the object is either at rest or moving at a constant velocity.

Front

What is the difference between positive and negative acceleration?

Back

Positive acceleration indicates an increase in velocity, while negative acceleration (deceleration) indicates a decrease in velocity.

Front

In the context of motion, what does 'initial velocity' refer to?

Back

Initial velocity is the velocity of an object at the start of a time interval.

Front

What does 'final velocity' mean?

Back

Final velocity is the velocity of an object at the end of a time interval.

Front

How does gravity affect acceleration on Earth?

Back

On Earth, gravity causes objects to accelerate downwards at approximately 9.81 m/s².

Front

What is the formula for calculating distance when acceleration is involved?

Back

The formula is: distance = initial velocity * time + 0.5 * acceleration * time².