Question

A plane needs to reach a velocity of 300 km/h relative to the air in order to take off. There is a wind blowing at 80 km/h in the direction opposite to take off. What velocity must the plane reach relative to ground in order to take off?

Answer 1

Answer:

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Answer 2

Answer:

220 km/hr

Explanation:

let v=velocity of plane relative to the ground

va= velocity relative to the air

vw= velocity of the wind

Since it is in opposite direction, so

v=300km/h- 80 km/h

v=220km/h