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Q1. A piece of aluminium (specific heat 0.910 kJ/kg 0C) of mass 116 g at 75 0 C is dropped into a Styrofoam cup filled with 118 ml water at 20 0 C. What are the final temperatures of the water and the aluminium?

Q2. A 1500 kg car carrying four 87kg people travels over a rough "washboard" dirt road with corrugations 4.40 m apart which causes the car to bounce on its spring suspension. The car bounces with maximum amplitude while its speed is 19km/h. The car now stops, and four people get out. By how much does car body rise on its suspension owing to this decrease in weight?

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