What is the kinetic energy in joules of 850g motorcycle moving 61 m/s? Calculate the potential energy of the motorcycle when on a steep hill 40 meter high?

Question

Energy KE=0.5 mv2

Answer 1

KE = 1/2 mv²

m = mass in kg

v = velocity in m/s

KE = 1/2 (0.850 kg)(61 m/s)² = 1581 kgm²/s² = 1581 J

PE = m x g x h

m = mass in kg = 0.850 kg

g = gravity in m/s² = 9.8 m/s²

h = height in m = 40 m

PE = (0.850 kg)(9.8 m/s2)(40 m) = 333 kgm²/s² = 333 J