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QUESTION 1: Suppose a boat moves at 18.8 m/s relative to the water. If the boat...

QUESTION 1:

Suppose a boat moves at 18.8 m/s relative to the water. If the boat is in a river with the current directed east at 3.10 m/s,what is the boat's speed relative to the ground when it is heading east, with the current, and west, against the current? (Enter your answers in m/s.)

HINT

(a)

east with the current

m/s

(b)

west against the current

m/s

QUESTION 2:

An airplane maintains a speed of 663 km/h relative to the air it is flying through as it makes a trip to a city 710 km away to the north. (Assume north is the positive y-direction and east is the positive x-direction.)

(a) What time interval is required for the trip if the plane flies through a headwind blowing at 35.1 km/h toward the south?
h

(b) What time interval is required if there is a tailwind with the same speed?
h

(c) What time interval is required if there is a crosswind blowing at 35.1 km/h to the east relative to the ground?
h

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