A jet airplane travelling at the speed of 500

Asked by admin @ 11/08/2021 in Physics viewed by 335 People

A jet airplane travelling at the speed of 500 km h⁻¹ ejects its products of combustion at the speed of 1500 km h⁻¹ relative to the jet plane. What is the speed of the later with respect to an observer on the ground?

Answered by admin @ 11/08/2021

Hey mate,

# Answer: vp = -1000 km/h

# Given-
- Speed of jet plane
vj = 500 km/h
- Speed of ejection of products
vp = ? km/h
- Relative speed of ejection of products wrt jet plane
vpj = -1500 km/h

# Solution-
Relative speed of ejection of combustion products wrt jet plane is given by formula,
vpj = vp-vj
-1500 = vp-500
vp = -1000km/h

Speed of ejection of combustion products observed from ground is 1000km/h in direction opposite to the direction of motion of the jet airplane.

Hope that ia helpful...

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A jet airplane travelling at the speed of 500

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