

McqMate
Q. |
A stone is dropped from the roof of a house towards the ground. The kinetic energy of the stone will be maximum: |
A. | just after it is dropped |
B. | when it is just on the half-way |
C. | just before it touches the ground |
D. | when it touches the ground |
Answer» C. just before it touches the ground | |
Explanation: When an object reaches the ground it has its maximum value of kinetic energy just before touching the ground. Since kinetic energy + potential energy= Constant; so on reaching ground the potential energy of an object becomes zero (0). The kinetic energy on reaching ground becomes maximum. |
View all MCQs in
PhysicsNo comments yet