Fig. 4.1 illustrates a student carrying out a set of repetitive ‘step-up’ exercises. During each ‘step-up’, the student moves from the floor up onto a box, then returns to the floor.
(a(i))[3]
Calculate the work done as the student rises through 0.40 m.
(a(ii))[2]
State the energy stores that become larger because of energy transfers from the student’s chemical energy store.
(b)[3]
Calculate the student’s power for this energy transfer.
Worked solution & mark scheme
This 8-mark question has a full step-by-step worked solution and mark scheme. One marking point: “240 J” …