Burnt out speed of a rocket …..when…… .

What is meant by burnt out speed of a rocket?

Does the centre of mass of a rocket in free space accelerate? Explain. Can the speed of a rocket exceed the exhaust speed of the fuel? Explain.

Does the centre of mass of a rocket in free space accelerate? Explain. Can the speed of a rocket exceed the exhaust speed of the fuel? Explain.

A rocket motor consumes 100 kg of fuel per second exhausting it with a speed of 5 km/s. The speed of the rocket when its mass is reduced to (1^(th))/(20) of its initial mass, is ( Assume initial speed to be zero and ignored gravitational and viscous forces. )

A rocket is fired with a speed of 2sqrt(gR) near the surface of earth and is direceted upwards .What is the speed of the rocket in the interstellar space?

The driver of a car moving towards a rocket launching pad with a speed of 6 m s^(-1) observed that the rocket is moving with speed of 10 m s^(-1) . The upward speed of the rocket as seen by the stationery observer is nearly