Question

The rocket engine lifts a rocket from the earth, because hot gases:

• A. push it against the air with very high velocity
• B. push it against the earth with very high velocity
• C. heat up the air which lifts the rocket with very high velocity
• D. react against rocket and push it up with very high velocity

Answer 1

Answer: (B)

push it against the earth with very high velocity

When the rocket gas pushes it against the earth with high velocity, there is production of reaction force which creates lift for the rocket.