State what the principle of conservation of energy means.
(b(i))[2]
From the information in Fig. 2.1, calculate the percentage of energy transferred from the chemical store to the kinetic store.
(b(ii))[1]
Using the details in Fig. 2.1 and Fig. 2.2, state which car is more efficient. Give a reason for your answer.
Worked solution & mark scheme
This 4-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Energy is not created or destroyed OR energy is simply transformed or transferred from one store/form/type to another” …