A rocket can go vertically upwards in earth's atmosphere because - Vidyadip

MCQ

A rocket can go vertically upwards in earth's atmosphere because

A
It is lighter than air
B
Of gravitational pull of the sun
C
It has a fan which displaces more air per unit time than the weight of the rocket
✓
Of the force exerted on the rocket by gases ejected by it

✓

Answer

Correct option: D.

Of the force exerted on the rocket by gases ejected by it

d
In accordance with Newton's $3^{rd}$ Law of Motion the exhaust exerts an equal and opposite force on the rocket which propels it upward enabling it to overcome the gravitational force of the earth.It flies along a path at an angle to the earth's surface which places the payload in an orbit around the earth.

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