Topic Menu

Cyber-chess a chess instruction site
Questions on Energy Transitions

Q2. The diagram shows a cyclist at different positions as she cycles over a humpback bridge.

(a)

(i) Where does the cyclist have the most kinetic energy?

At point C Kinetic energy depends on the speed at which an object is moving. It also relates to its mass.

1 mark

(ii) Where does the cyclist have the most gravitational potential energy?

At point B Gravitational potential energy relates to the position of the object in the gravitational field. The higher up it is the more potential gravitational energy it has. It also relates to its weight.

1 mark

(iii) Where does the cyclist have the least gravitational potential energy?

At point D

1 mark

(b) The cyclist stops at point D. Into what forms was the energy transferred when she came to a halt?

any one from

    • thermal energy in the brakes or wheels or tyres
    • thermal energy the surroundings
    • sound energy in the surroundings (air)

1 mark

Maximum 4 marks