(a(i))[2]
Calculate the ball’s initial gravitational potential energy.
(a(ii))[3]
Calculate the ball’s speed immediately before it strikes the ground. Ignore air resistance.
(b(i))[2]
After the ball lands, it comes to rest. Its kinetic energy is changed into internal energy, so the ball’s temperature rises. The specific heat capacity of modelling clay is 1400 J kg$^{-1}$ ^{\circ}C$^{-1}$. Calculate the maximum possible temperature rise of the ball. Show your working.
(b(ii))[1]
Suggest one reason why the real temperature increase of the ball might be less than the value calculated in (b)(i).