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1.7 Energy, work and power

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Question 281

A rollercoaster cart starts from rest at the top of a hill (point A) and rolls down. At the bottom of the hill (point B), the brakes are applied and the cart is brought to a complete stop.

Which of the following sequences correctly describes the primary energy transfers that have taken place from point A to point B?

A

gravitational potential →\rightarrow→ kinetic →\rightarrow→ internal (thermal)

B

gravitational potential →\rightarrow→ internal (thermal) →\rightarrow→ kinetic

C

kinetic →\rightarrow→ gravitational potential →\rightarrow→ internal (thermal)

D

kinetic →\rightarrow→ internal (thermal) →\rightarrow→ gravitational potential

Markscheme

1.7 Energy, work and power Questions

  1. IGCSE
  2. /Physics
  3. /1.7 Energy, work and power

533 exam-style questions on CIE IGCSE Physics 1.7 Energy, work and power, covering 1.7.1a Energy stores and energy transfers, 1.7.1b Conservation of energy, 1.7.1c Kinetic and gravitational potential energy, 1.7.2 Work done, 1.7.3 Energy resources, 1.7.3a Energy resources and electricity generation, 1.7.3b Nuclear fusion as an energy source, 1.7.3c Efficiency of energy transfer, and 1.7.4 Power. Each one has a worked solution and a mark scheme showing where the marks go.

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