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

Front

If an object is moving in a circular path at a constant speed, does it have acceleration?

Back

Yes, an object moving in a circular path at a constant speed has centripetal acceleration directed towards the center of the circle.

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

What does a negative acceleration indicate?

Back

Negative acceleration, also known as deceleration, indicates that an object is slowing down.

Front

How does a right turn while walking relate to acceleration?

Back

Making a right turn while walking involves a change in direction, which means there is acceleration even if the speed remains constant.

Front

Calculate the final velocity of a battery-powered car that accelerates at 14.0 m/s² for 3.2 seconds starting from rest.

Back

Final velocity (v_f) = initial velocity (v_i) + acceleration (a) * time (t) = 0 + 14.0 m/s² * 3.2 s = 44.8 m/s.

Front

What is uniform acceleration?

Back

Uniform acceleration occurs when an object's velocity changes at a constant rate over time.

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

In which scenario does a car have no acceleration?

Back

A car with the cruise control set at 80 km/h has no acceleration because it maintains a constant speed.