A constant force acts on a body of mass m which is at rest. A velocity v is acquired in moving a specific distance: vardm are related as

Options

A. `vprop1/sqrt(m)`
B. `vprop1/(m)`
C. `vpropm`
D. `vpropsqrt(m)`

Answer

A

Explanation

Work done=Force x displacement The energy is manifested as kinetic energy
`K.E.=1/2mv^2`= constant since v is acquired is of a definite magnitude.
`1/2mv^2` constant, `" "v^2=2/mxx"constant " or vprop1/(sqrt(m))`