Skip to content

Course home

1.7 Energy, work and power

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89

Question 24

A forklift lifts crates of different masses to different shelf heights. Each lift is performed in the same amount of time.

In which of the following situations does the forklift develop the greatest average power?

A

Lifting a crate of mass $3 m$ to a height of $2 h$

B

Lifting a crate of mass $2 m$ to a height of $2.5 h$

C

Lifting a crate of mass $4 m$ to a height of $1.2 h$

D

Lifting a crate of mass $1.5 m$ to a height of $3.5 h$

Markscheme

1.7 Energy, work and power Questions

IGCSE
Physics
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.

Question bank