CBSE Class 11-science Answered
Let Vg be the velocity of ejecting gases with respect to ground.
velocity of jet plane Vj = + 500 km/hr
Velocity of ejected products w.r.t. jet plane
Vgj = Vg - Vj
or, Vg = Vgj + Vj
= -1500 + 500 = -1000 km/hr
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