Q737
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
AnswerD.
When it touches the ground
Answer: Option C
Solution
Answer: Option C
Solution:
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.