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QUESTION

# just final answer Q 11 The pilot of an aircraft flies due north relative to the ground in a wind blowing 50 km/h toward the east.

Q 11

The pilot of an aircraft flies due north relative to the ground in a wind blowing 50 km/h toward the east. If his speed relative to the air is 92 km/h, what is the speed of his airplane relative to the ground ? (State the answer to the nearest tenth of km/h )

Q 12

A go-kart moves on a circular track of radius 57 m. It takes 2 minutes to complete the 3 turns. What is the magnitude of the centripetal acceleration experienced by the kart? Round your answer to nearest hundredth of m/s2.

Q 13

A particle's position is given by the following equation:  =(4,7,9) +(-4,0,-9)t-(7,0,0)t2; where t is in seconds and magnitude of r is in meters Find the distance of of this particle from the origin at . State your answer to the nearest one tenth of a meter.

Q 14

A particle's position is given by the following equation:  =(5,6,10) +(-5,0,-5)t-(8,0,0)t2; where t is in seconds and magnitude of r is in meters Find the magnitude of the velocity of this particle at . State your answer to the nearest one tenth of a meter per second.