body moving in stra-cht line is it\'s pment the slope of the velocitVvs time gra

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

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