Q. 84.0( 10 Votes )
Which physical principle is involved in the working of a jet airplane?
Simply by Newton's third law I.e. conservation of momentum. The jet engine exerts force rearwards by throwing high velocity jet of air and as a reaction the plane moves forward.
Rate this question :
A Honda City car, A Maruti Alto car, A Tata Nano car and a Mahindra Scorpio car, all are running at the same speed of 50 m/s under identical conditions. If al these cars are hit from behind with the same force and they continue to move forward, the maximum acceleration will be produced in: Mass of the different vehicles: Honda City – 1150Kg, Maruti Alto-720Kg, Tata Nano-600Kg,Mahindra Scorpio-2510Kg
A. Honda City B. Maruti Alto
C. Tata Nano D. Mahindra ScorpioLakhmir Singh & Manjit Kaur - Physics
A fielder pulls his hands backwards after catching the cricket ball. This enables the fielder to:
A. Exert larger force on the ball
B. Reduce the force exerted by the ball
C. Increase the rate of change of momentum
D. Keep the ball in hands firmlyLakhmir Singh & Manjit Kaur - Physics
The rocket work on the principle of conservation of:
A. Mass B. Energy
C. Momentum D. VelocityLakhmir Singh & Manjit Kaur - Physics