acceleration

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity of an object over time.

Front

What does it mean for an object to be under uniform acceleration?

Back

An object is under uniform acceleration when its velocity changes at a constant rate per unit time.

Front

Can an object be accelerating if it is moving at a constant speed?

Back

Yes, an object can be accelerating if it is changing direction, even if its speed is constant (e.g., a car driving in a circle).

Front

What is the formula for calculating average acceleration?

Back

Average acceleration = (final velocity - initial velocity) / time taken.

Front

If a bus starts from rest and accelerates to 14 m/s in 4 seconds, what is its average acceleration?

Back

3.5 m/s².

Front

What happens to the velocity of a falling object as it descends?

Back

The velocity of a falling object increases due to the acceleration caused by gravity.

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 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

What is the effect of gravity on falling objects?

Back

Gravity causes falling objects to accelerate downwards at approximately 9.81 m/s².

Front

What is instantaneous acceleration?

Back

Instantaneous acceleration is the acceleration of an object at a specific moment in time.