(D) In accordance with Newton's $3^{rd}$ Law of Motion,the exhaust gases ejected from the rocket exert an equal and opposite force on the rocket,known

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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 gases ejected from the rocket exert an equal and opposite force on the rocket,known as thrust.This thrust propels the rocket upward,enabling it to overcome the gravitational force of the Earth.Therefore,the correct reason for the rocket's upward motion is the force exerted on the rocket by the gases ejected by it.

Class 11 Physics Newton's Laws of Motion and Friction Variable Mass System and Rocket Problem

Easy

$A$ rocket can go vertically upwards in the Earth's atmosphere because

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

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Newton's Laws of Motion and Friction

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Variable Mass System and Rocket Problem

$A$ rocket is fired vertically from the ground with a resultant vertical acceleration of $10 \,m/s^2$. The fuel is exhausted in $1 \,min$ and it continues to move up. What is the maximum height reached (in $\,km$)?

DifficultAP EAMCET 2020

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$A$ Diwali rocket is ejecting $0.05\, kg$ of gases per second at a velocity of $400\, m/s$. The accelerating force on the rocket is

Easy

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$A$ gun of mass $10 \, kg$ fires $4$ bullets per second. The mass of each bullet is $20 \, g$ and the velocity of the bullet when it leaves the gun is $300 \, m/s$. The force required to hold the gun while firing is (in $N$)

EasyAIIMS 2019

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$A$ rocket of initial mass $1500 \ kg$ ejects gas at a constant rate of $10 \ kg/s$ with a relative speed of $5 \ km/s$. The acceleration of the rocket $50 \ s$ after the blast,neglecting gravity,is $x \ ms^{-2}$. Find the value of $x$.

Medium

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$A$ rocket is fired vertically up from the ground with a resultant acceleration of $10\,m/s^2$. The fuel is finished in $1\,min$ and it continues to move up. Take $g=10\,m/s^2$.

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$A$ rocket can go vertically upwards in the Earth's atmosphere because

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$A$ rocket is fired vertically from the ground with a resultant vertical acceleration of $10 \,m/s^2$. The fuel is exhausted in $1 \,min$ and it continues to move up. What is the maximum height reached (in $\,km$)?

$A$ Diwali rocket is ejecting $0.05\, kg$ of gases per second at a velocity of $400\, m/s$. The accelerating force on the rocket is

$A$ gun of mass $10 \, kg$ fires $4$ bullets per second. The mass of each bullet is $20 \, g$ and the velocity of the bullet when it leaves the gun is $300 \, m/s$. The force required to hold the gun while firing is (in $N$)

$A$ rocket of initial mass $1500 \ kg$ ejects gas at a constant rate of $10 \ kg/s$ with a relative speed of $5 \ km/s$. The acceleration of the rocket $50 \ s$ after the blast,neglecting gravity,is $x \ ms^{-2}$. Find the value of $x$.

$A$ rocket is fired vertically up from the ground with a resultant acceleration of $10\,m/s^2$. The fuel is finished in $1\,min$ and it continues to move up. Take $g=10\,m/s^2$.

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