50kJ of energy causes a displacement of 25m for a body in the direction of force for 2.5s. Find the power in a unit of horse power.
26.8 hp
Power is defined as the rate of change of energy.
So, power=50×1032.5=2×104W
Now, we know that,
1 hp = 746 W
Therefore, power =2× 104W
=2×106746=26.8hp