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Q. A 1m diameter vat of liquid is 2 m deep. There pressure at the bottom of the vat is 1.3 atm. What is the mass of the liquid in the vat?

Q. An unmarked police car travelling a constant 85 km/h is passed by a speeder. Precisely 2 s after the speeder passes, police officer steps on the accelerator.

If the police car accelerates uniformly at 2 m/s^2 and overtakes speeder after accelerating for 6 s, what was the speeder's speed in km/h?

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