Assertion : A rocket moves forward by pushing surrounding air backwards. Reason : It derives necessa

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4-1.Newton's Laws of Motion

easy

$Assertion$ : A rocket moves forward by pushing the surrounding air backwards.

$Reason$ : It derives the necessary thrust to move forward according to Newton’s third law of motion

If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.

If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.

If the Assertion is correct but Reason is incorrect.

If both the Assertion and Reason are incorrect.

(AIIMS-2001)

Solution

A rocket moves forward taking the help of reaction force. For that it has to exert a force on the surrounding air so that it receives reaction force as per Newton’s third law.

Standard 11

Physics

An object is thrown vertically upwards. At its maximum height, which of the following quantity becomes zero?

medium

(JEE MAIN-2022)

The momentum is most closely related to

easy

Explain -product of mass and velocity is important in producing effect of force.

medium

A particle of mass m moving with a velocity $u$ makes an elastic one dimensional collision with a stationary particle of mass $m$ establishing a contact with it for extremely small time $T$. Their force of contact increases from zero to $F_0$ linearly in time $\frac{T}{4}$, remains constant for a further time $\frac{T}{2}$ and decreases linearly from $F_0$ to zero in further time $\frac{T}{4}$ as shown. The magnitude possessed by $F_0$ is

hard

The time in which a force of $2 \,N$ produces a change of momentum of $0.4\,kg – m{s^{ – 1}}$ in the body is ……… $\sec$

easy

$Assertion$ : A rocket moves forward by pushing the surrounding air backwards. $Reason$ : It derives the necessary thrust to move forward according to Newton’s third law of motion

Solution

Similar Questions

An object is thrown vertically upwards. At its maximum height, which of the following quantity becomes zero?

The momentum is most closely related to

Explain -product of mass and velocity is important in producing effect of force.

The time in which a force of $2 \,N$ produces a change of momentum of $0.4\,kg – m{s^{ – 1}}$ in the body is ……… $\sec$

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$Assertion$ : A rocket moves forward by pushing the surrounding air backwards.

$Reason$ : It derives the necessary thrust to move forward according to Newton’s third law of motion