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 .
A.
B.
C.
D.
A.
B.
C.
D.
Correct Answer – B
`v prop t , v^(2) prop t^(2) , K.E prop t^(2)`.