Rocket in flight is not an illustration of projectle .
Rocket takes flight due to combustion of fuet and does not move undr the graveity effect alone.

Is the rocket in flight is an illustration of projectile ?

Is the rocket in flight an illustration of a projectile?

Assertion : A rocket in flight is an illustration of projectile Reason : Because roket is not projected with some initial veloctity .

The casing of a rocket in flight burns up due to friction. At whose expense is the heat energy required for burning obtained? The rocket or the atmosphere or both.

Answer the following: a) The casing of a rocket in flight burns up due to friction. At whose expense is the heat required for burning obtained? The rocket or the atmosphere? b) Comets move around the sun in highly elliptical orbits. The gravitational force on the comet due to the sun is not normal to the comet's velocity in general. Yet the work done by the gravitatonal force over every complete orbit of the comet is zero. Why? c) An artificial satellite orbiting the earth in very atmosphere loses its energy grdually due to dissipation against atmospheric resistance, howerver small. Why then does its speed increase progressively as it comes closer and closer tothe earth? d)In fig i) the man walks 2m carrying a mass of 15 kg on his hands. In Fig ii) he walks the same distance pulling the rope behind him. The rope goes over pulley, and a mass of 15 kg hangs at its other end. In which case is the work done greater?

The spring of a rocket in flight burns up due to friction .At whose expense is the heat energy required for burning obtained ? The rocket or the atmosphere ?