Question

if unit of time is 10 s, unit of mass is 5kg and unit of length is 20 m, then the new unit of energy is m x 10 J, find m

Answer 1

E = 1/2 M v^2 = 5/2 ^ (20/10)^2 = 10 Joules current energy

Then E * m = 10 joules

m * 10 = 1 unit and the value of m is .1

Current energy * .1 = 10 * .1 = 1 the new unit of energy