A tennis ball dropped on a barizoontal smooth surface , it because back to its original postion after hiting the surface the force on the bell during the collision is propertional to the length of compression of the bell . Which one of the following skethes desches discribe the variation of its kinetic energy `K` with time `1` mass apporiandly ? The figure as only illistrative and not to the scale .

Options

A.
B.
C.
D.

Answer

B

Explanation

During motion `K = 1/2 mv^2 = 1/2 m g^2 t^2`.