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Q. A ranger in a national park is driving at 28.0 mi/h when a deer jumps into the road 225 ft ahead of the vehicle. After a reaction time t, the ranger applies the brakes to produce an acceleration of a = -9.00 ft/s2. What is the maximum reaction time allowed if she is to avoid hitting the deer?

Q. A plane flies from base camp to Lake A, 270 km away in the direction 20.0° north of east. After dropping off supplies it flies to Lake B, which is 260 km at 30.0° west of north from Lake A. Graphically determine the distance and direction from Lake B to the base camp.

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