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1.7 Energy, work and power

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Question 170

An electric motor is used to pull a cart up a ramp. Which information is not needed to calculate the rate at which the motor does work against gravity?

A

the vertical height of the ramp

B

the total weight of the cart

C

the length of the ramp

D

the time taken for the cart to travel up the ramp

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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