A rocket can move in air free space, but a jet plane cannot. Why?

Rockets can move in airfree space but jet planes cannot. Why?

Can a rocket operate in free space ?

A 3000 kg space probe is moving in a gravity free space at a constant velocity of 300 m//s . To change the direction of space probe, rockets have been fired in a direction perpendicular to the direction of initial motion of the space probe, the rocket firing exerts a thrust of 4000 N for 225 s . The space probe will turn by an angle of (neglect the mass of the rockets fired)

A 3000 kg space probe is moving in a gravity free space at a constant velocity of 300 m//s . To change the direction of space probe, rockets have been fired in a direction perpendicular to the direction of initial motion of the space probe, the rocket firing exerts a thrust of 4000 N for 225 s . The space probe will turn by an angle of (neglect the mass of the rockets fired)

A rocket moving in free space has varying mass due to fuel exhausted d m(t)/dt = -bv^2(t) where m(t) = instantaneous mass, b = constant, v(t) = instantaneous velocity . If gases are ejected with velocity u, with respect to rocket, instantaneous acceleration of should be

A rocket moving in free space has varying mass due to fuel exhausted d m(t)/dt = -bv^2(t) where m(t) = instantaneous mass, b = constant, v(t) = instantaneous velocity . If gases are ejected with velocity u, with respect to rocket, instantaneous acceleration of should be

Light can travel in vacumm but sound cannot. Why?

A jet plane flies in the air because