Question

can a body have zero velocity and still have acceleration give example

Answer 1

Yes, an object can have zero velocity and still be accelerating simultaneously.
Consider an object moving in the forward direction. Suddenly a force acts on it and tries to accelerate the object in the backward direction. When you observe the object, you will find that the object will continue to move forward for some time and then stops momentarily. Then the object will start to move in the backward direction.
When the object stops for a moment, its velocity at that instant is zero, therefore no motion in either forward or backward direction. However the acceleration is still acting on it. At that instant, the magnitude of velocity in the backward direction is equal to the velocity in the forward direction, but as the acceleration continues to act on it, the velocity in the backward direction increases in magnitude over time, and the object finally starts moving in the backward direction.

Answer 2

Answer :

YES
A body can have zero velocity at some moment and still have acceleration.

For example -:

● Lets discuss the case of pendulum where a mass is hung from a fixed point. When we pull back that mass and release it,it starts swinging due to a force called gravity. It also starts swinging out and up because of inertia.

Now when that mass reaches at extreme position, it completeley stops for a moment and at that moment its VELOCITY BECOMES ZERO.

But we know that gravity is constantly working on each and every particle so the ACCELERATION on that particle was NOT ZERO when that mass was having ZERO VELOCITY at extreme position.


● Similarly suppose when we throw a ball in upward direction, then we see that just for a moment that ball stops completely and at that moment its VELOCITY BECOMES ZERO.

But since gravity is always working on any particle that has mass, its ACCELERATION due to GRAVITY was still working at that moment when that ball stopped.


●●● Hope It Helps ●●●