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Here is the Question copied from the QP: 5054_s11_qp_22 (May/June 2011 , 5054/22 Question No 2,)
Fig. 2.1 illustrates the journey of a cyclist from point A to point B. Points A and B are at the same
height.
The cyclist starts from rest at A and pedals up and over a hill. Near the bottom of the hill, she
starts to brake and comes to rest at B.
(a) Describe the energy changes that take place as she pedals up the hill at constant speed.
Here is the answer from the Mark Scheme:
2 (a) chemical (potential) energy at start B1
gravitational/potential energy increases B1
thermal energy/heat/internal energy produced B1
So should we say that there is no K.E involved; But Chemical Potential Energy is being converted into G.P.E and Thermal Energy.
Oh, so whenever humans or vehicles running on fuel are concerned, Chemical Potential Energy is converted into G.P.E.
But when we throw an object in the air, then Kinetic Energy in that object gets converted to G.P.E.