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8 Energy – forces doing work

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Question 12

A gardener compares two electric lawn mowers.

The table gives measurements for lawn mower P.

Power in W\text{W}WOperating time in s\text{s}s
120060

Lawn mower Q has a power of 1500 W and transfers 180 000 J180\,000\ \text{J}180000 J of energy.

a.

State the equation linking power, energy transferred and time taken.

[1]
b.

Calculate the energy transferred by lawn mower P during the operating time shown in the table.

[2]
c.

Calculate the operating time for lawn mower Q.

[2]
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8 Energy – forces doing work Questions

  1. GCSE
  2. /Physics
  3. /8 Energy – forces doing work

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