The KE acquired by a mass m in travelling a certain distance s, starting from rest, under the action of a constant force is directly proportional to :

Options

A. `m^(0)`
B. m
C. `m^(2)`
D. `sqrtm`

Answer

A

Explanation

K.E. acquired by the body = work done on the body
K.E. `=(1)/(2)mv^(2)=FS` i.e. . it does not depend upon the mass of the body although velocity depends upon the mass
`v^(2)prop (1)/(m) " "` [If F and s are constant]