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Energy transfers

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Question 10

The diagram shows part of a roller coaster ride. The car starts from rest at the top platform, passes point P, and is then released to slide down the track.

A line graph representing a roller coaster track. The track begins on a high platform on the left where a roller coaster car is positioned. It moves to the right over a high crest labeled P, descends a steep slope through a point Q, reaches the lowest trough of the track labeled R, ascends over a second lower crest, and finally levels out along a horizontal platform labeled S.

a.

Choose letters from the diagram to complete this sentence.

  • The car has the greatest gravitational potential energy at point __________
  • And it has the most kinetic energy at point __________
[2]
b.

The maximum gravitational potential energy of the car is 450 kJ450\text{ kJ}450 kJ. The maximum height of the car is 50 m50\text{ m}50 m.

Calculate the mass of the car.

gravitational potential energy=mass×g×height \text{gravitational potential energy} = \text{mass} \times g \times \text{height} gravitational potential energy=mass×g×height
[3]

Energy transfers Questions

  1. IGCSE
  2. /Physics
  3. /Energy transfers