Question
Physics Question on Gravitation
A rocket is intended to leave the Earth's gravitational field. The fuel in tis main engine is a little less than the amount that is necessary and an auxiliary engine, (only capable of operating for a short time) has to be used as well. When is it best to switch on the auxiliary engine?
A
at take-off
B
when the rocket has nearly stopped with respect to the Earth
C
It doesn't matter
D
Can't say
Answer
at take-off
Explanation
Solution
The correct option is (A): at take-off.