(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


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(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