8107 N Activity 4:
A boy of mass 55 kg is travelling at 6m-s 'on a skateboard of mass 1 kg, when he reaches a
ramp of length 8m, he keeps moving and reaches the top of the ramp with velocity of 1 ms
The
constant friction that he experiences is 6 N.
8 m
4.1 Explain whether his mechanical energy is conserved or not
4.2. Calculate the kinetic energy of the boy when reaches the ramp.
4.3. Calculate the height of the ramp.​