Question
body moving in stra-cht line is it's pment the slope of the velocitVvs time graph, of ge speed e acceleration wn upward. While the ball is in free fall, does its acceleration 6 An airplane mainta ains a speed of 620 km/h relative to the air it is flying through as it makes a trip to a city 810 km away to the north. a) (5 points) what time interval is required for the trip if the plane flies through a headwind blowing at 30.0 km/h toward the south? b) (5 points) What time interval is required if there is a crosswind blowing at 30.o km/h to the east relative to the ground?
Explanation / Answer
We have to use concept of relative speed here.
a)
If actual speed is V then,
V+30=620
V=590
So,
time= distance/speed
T= 810/590
=1.37288 hours
b)
Here there will np component of wind velocity relative to plane's velocity as it is flowing perpendicular to airplane.
So
Time= distance/speed
=810/620
1.30645 hours