Acceleration

Front

What is acceleration?

Back

Acceleration is the rate at which an object's velocity changes over time. It can be positive (speeding up) or negative (slowing down).

Front

Can an object have acceleration if it is slowing down?

Back

Yes, an object can have acceleration even if it is slowing down. This is known as negative acceleration or deceleration.

Front

What is the formula for acceleration?

Back

The formula for acceleration (a) is: a = (v_f - v_i) / t, where v_f is final velocity, v_i is initial velocity, and t is time.

Front

What does a constant speed indicate about acceleration?

Back

A constant speed indicates that there is no acceleration, as the velocity is not changing.

Front

If a car is moving at a constant speed of 80 km/h, what is its acceleration?

Back

The acceleration is 0 m/s² because the speed is constant.

Front

What is the unit of acceleration?

Back

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

Front

How do you calculate the time taken to stop a car given its initial speed and acceleration?

Back

Use the formula: t = (v_f - v_i) / a, where v_f is the final velocity (0 for stopping), v_i is the initial velocity, and a is the acceleration.

Front

What is an example of an object experiencing circular motion?

Back

A toy train traveling in a circle is an example of an object experiencing circular motion, which involves acceleration due to changing direction.

Front

What happens to the acceleration of an object if the net force acting on it is zero?

Back

If the net force acting on an object is zero, its acceleration is also zero, meaning it will maintain its current state of motion.

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.