(a) An arrow moves forward when released from a stretched bow. Explain the transformation of energy in the process. (b) A boy of mass 50 kg climbs up a vertical height of 100 m. Calculate the amount of potential energy he gains


(a) When the bow is stretched it stores potential energy. When the arrow is released, the potential energy stored in the bow gets transformed into the kinetic energy of the/ arrow.

(b) Given m = 50 kg,
h = 100 m,
g = 10 m s^-2 ,
PE = ?
PE = mgh = 50 x 10 x 100 = 5000 J