A ball is dropped and it hits the floor at a point A. It rebounds upward to a point B. While moving from A to B its?
kinetic energy is increasing
potential energy is increasing
potential energy is decreasing
kinetic energy remains constant
Explanation
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My school i disagree with the answer and previous explanations. The ball hits the ground level at A and moves up towards B against the force of gravity.The increase in height will cause kinetic energy to reduce and potential energy to increase. The answer should be B
Certainly! When the ball is dropped from point A, it initially has gravitational potential energy due to its height above the ground. As it falls towards the ground, this potential energy is converted into kinetic energy, which is the energy of motion. At the point of impact (A), the ball's potential energy is at its minimum, while its kinetic energy is at its maximum.
When the ball rebounds upward to point B, it starts to gain height again. As it moves upward, its kinetic energy decreases because it's slowing down due to the opposing force of gravity. At the same time, its height increases, causing its potential energy to increase.
So, while the ball is moving from point A to point B, its potential energy is decreasing (at A) and then increasing (as it approaches B), while its kinetic energy is decreasing (as it moves upward) and then increasing (as it moves downward).
The correct answer is B. When a ball is moving against gravity [ upwards ], it's motion or velocity is decreasing and that will decrease the kinetic energy. K. E = 1/2 MV² So if velocity decreases so does kinetic energy.
i no read the question well
, of course it's B. p.d increases with increase in height
The correct answer is B.
Here is why:
moving from A to B , implies that the body's altitude is increasing, and the implication of that is an increase in potential energy
pE= mg(h). ......... since h is increasing the pE is increasing too...
again, as the bidy moves from A to B, its motion is against g( gravity) , as such , it had its highest velocity (also kinetic energy) just above A and lowest velocity(also KE ) at B.
so we say that as the body moves from A to B, its PE increases while its K E decreases
impossible... At A, it stops momentarily so its at full potential energy.. Then when MOVING from A to B, d kinetic energy increases.. So correct option is A
