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Q. An unmarked police car travelling a constant 85 km/h is passed by a speeder travelling 145km/h. Precisely 1s after the speeder passes, police officer steps on the accelerator; if the police car's acceleration is 1.90 m/s^2, how much time passes before the police car overtakes the speeder after speeder passes (assumed moving at constant speed)?

Q. When you go out to your car one cold winter morning you discover a 0.70 thick layer of ice on the windshield, which has an area of 1.6. If the temperature of the ice is -2, and its density is 917, find out the heat required to melt all the ice.

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