Ke acquired by a mass m in travelling a certain distance d starting from rest under the action of a constant force is directly proportional to mass. how? ?

Explanation:

from 3d equation of motion : (Vf)^2=(Vi)^2+2ad , where Vf(final velocity) ,Vi(initial velocity) , a(acceleration) , thus Vi=0 , Vf^2=2ad , (*m) , m*Vf^2=2ad*m , ma = force , force*d= work , work due to motion is KE , m*Vf^2=2KE , so KE=(m*Vf^2)÷2 , so m is directly proportional with KE

0 = 0.40 / 0 = 0

= 0.20 = 9.80 ⁄2 =?

=0 , = = 0.20 =0.50 0 0.40 ⁄

=0−122 =0−12(9.80 ⁄2)(0.50)2 =1.2