1) What is the equation for motive power? a) F x d b) F x v c) d / F d) v / F 2) What is the efficiency of a 100W motor that raises a load of 200kg through a height of 20cm in 25 seconds? g = 10N/kg a) 16% b) 32% c) 50% d) 4% 3) What is the final speed of a ball that has fallen 20m downwards ON THE MOON? g = 1.6N/kg a) 64 m/s b) 4 m/s c) 8 m/s d) 20 m/s 4) Which word matches the description: energy of mechanical waves due to the movement of atoms a) light b) sound c) water d) internal 5) Which word matches the description: the sum of the random potential and kinetic energies of all atoms in a system a) light b) sound c) internal d) nuclear

U6th Mechanics Revision

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