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.

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. 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.