Mass (m) = 1 kg
Height (h) = 5 m
Gravitational potential energy = mgh
= 1 × 10 × 5
= 50 J
When the mass hits the ground, its entire Potential energy is converted to Kinetic energy.
Hence, Kinetic energy of mass on hitting the ground = 50 J.
Mass (m) = 1 kg
Height (h) = 5 m
Gravitational potential energy = mgh
= 1 × 10 × 5
= 50 J
When the mass hits the ground, its entire Potential energy is converted to Kinetic energy.
Hence, Kinetic energy of mass on hitting the ground = 50 J.
(a) Calculate the change in the gravitational potential energy of the skier between A and B. (b) If 75% of the energy in part (a) becomes the kinetic energy at B, calculate the speed at which the skier arrives at B.(Take g = 10 ms-2).