Question
CCEA Unit 1 Paper
A motor lifts a load of 200 N through a height of 3.0 m in 5.0 s. The electrical input power to the motor is 160 W.
(a) Calculate the useful energy output (work done lifting the load). (2 marks) (b) Calculate the total energy input in 5.0 s. (2 marks) (c) Calculate the efficiency of the motor. (2 marks) (d) Suggest what happens to the wasted energy. (1 mark)
7 marks · take your time before peeking.
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Generated by TopMyGrade AI · cross-check official sources before relying on the mark-scheme phrasing.