An object of mass 0.35 kg is lifted through a height of 1.2 m at a constant speed of 1.5 m s-1.
What is the minimum power needed to lift the object?
A
0.53 W0.53\text{ W}0.53 W
B
4.1 W4.1\text{ W}4.1 W
C
5.2 W5.2\text{ W}5.2 W
D
6.2 W6.2\text{ W}6.2 W
Markscheme
Work, energy and power Questions
13 exam-style questions on OCR A A Level Physics Work, energy and power, covering Work and conservation of energy, Kinetic and potential energies, and Power. Each one has a worked solution and a mark scheme showing where the marks go.