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Q. In a performance test, each of two cars takes 9.40s to accelerate from rest to 25 m/s. Car A has a mass of 1288 kg, and car B has a mass of 1767 kg. Find the net average force that acts on (1) car A and (2) car B during the test.

Q. Object A has a gravitational potential energy of 24 joules while it rests on a shelf 5 m above the ground. Object B has the mass that is three times the mass of Object A. What would be gravitational potential energy of object B while it rests on a shelf 10 m above the ground?

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