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2.2 Newton’s laws

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Question 13
F

An electric motor does 18 000 J18\,000\ \text{J}18000 J of work in 2.0 minutes.

What is the power of the motor?

[1]
A

150 W150\ \text{W}150 W

B

300 W300\ \text{W}300 W

C

9000 W9000\ \text{W}9000 W

D

36 000 W36\,000\ \text{W}36000 W

Markscheme

2.2 Newton’s laws Questions

  1. GCSE
  2. /Physics
  3. /2.2 Newton’s laws

50 exam-style questions on OCR GCSE Physics 2.2 Newton’s laws, covering 2.2.1 Interactions between objects, 2.2.2 Force pairs in interactions, 2.2.3 Forces as vectors, 2.2.4 Newton's first law, 2.2.5 Resolving forces with vector diagrams, 2.2.6 Forces acting on an isolated object, 2.2.7 Free body diagrams and resultant force, 2.2.8 Free body diagrams for balanced forces, 2.2.9 Newton's second law, 2.2.10 Inertia and inertial mass, 2.2.11 Momentum in collisions, 2.2.12 Relating force, mass, velocity and acceleration, 2.2.13 Work done by a force, 2.2.14 Work, stored energy and units of energy, 2.2.15 Power as the rate of energy transfer, 2.2.16 Newton's third law, and 2.2.17 Circular motion and changing velocity. Each one has a worked solution and a mark scheme showing where the marks go.

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