Question

if the unit of force velocity energy are 20N 200J and 5m/s . find the unit of mass time length

Answer 1

If v=5m/s and u=0m/s then F = 20N Energy = 200J V = 5m/s Ek = 1/2×m×v(square) 200= 1/2×m×25 200×2/25 = mass 16kg = mass F=m×a 20N = 16 × a 20/16 = a 1.25m/s(square) =a V = u + at 5 = 0 + 1.25 × t 4secs = t Speed = distance / time Distance = time × speed d = 4×5 d = 20m