Question

JUU
87. The kinetic energy acquired by a mass m in
travelling a certain distance x, starting from rest,
under the action of a constant force is directly
proportional to
(a) m
(b) root m
ad
(c)1/root m

(d) independent of m​

Answer 1

ke= 1/2 mv^2

a= F/m

v^2 = u^2+ 2ax

v = √{2xF/m}

ke= 1/2m2xF/m= xF

independent of m