A 14 kilogram block is accelerated at 2.5 m/s2 up a frictionless plane inclined at 9.3 degree to the horizontal, with the speed increasing from 11 m/s to 27 m/s.
(a) Calculate the change in the block mechanical energy and
(b) Calculate the average rate at which energy is transferred to the block? Find the instantaneous rate of that transfer when the block's speed is (c) 11 m/s and (d) 27 m/s?