Question

In which of the following situations is the object accelerating?

I. A truck changing direction.
II. A car speeding up on a highway.
III. A motorcycle comes to a stop.
IV. A rolling ball moving with uniform speed.

Answer 1

A CAR SPEEDING UP ON A HIGH WAY

Answer 2

Acceleration in simple terms is increase in speed .acceleration is given in terms of distance covered by time therefore a car speeding up a highway is acceleration .

Deceleration is the reduction of speed ,it is the oposite of acceleration so a motocycle that is coming to a stop

A rolling ball moving at a uniform speed is neither accelerating nor decelerating but moving at a constant speed