Question
One horse power is equal to : (a) 1000 W (b) 500 W (c) 764 W (d) 746 W
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(d) 746 W
Reason — 1 horse power = 746 W
(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).