Answers

  • Brainly User
2014-10-12T12:00:20+05:30
Velocity of jet wrt latter=500 km/h
Velocity of latter wrt jet= -1500km/h  (-ve sign indicates the motion in opposite                                                                    direction)
Velocity of latter w.r.t groung = 500+(-1500)
                                               =-1000km/h
-ve sign shows opposite  direction

Hence  required  Velocity is 1000km/h


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  • Brainly User
2014-10-18T00:18:20+05:30
Velocity of jet = +500 km/h
Velocity of product of combustion wrt jet= -1500km/h (opposite direction) 
Velocity of product of combustion observed from ground is
V= (-1500) - 500 = -2000km/h = 2000km/h
opposite to direction of jet


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