An aircraft is moving with a velocity of 300,m{s^{ - 1}}. If all forces acting on it are balanced, t

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4-1.Newton's Laws of Motion

easy

An aircraft is moving with a velocity of $300\,m{s^{ - 1}}.$ If all the forces acting on it are balanced, then

It still moves with the same velocity

It will be just floating at the same point in space

It will fall down instantaneously

It will lose its velocity gradually

Solution

$F = ma$

If the forces are balanced, $F=0$, which implies $a=0$. If there's no acceleration, then the velocity is constant. The solutions are trajectories of constant velocity, which means the aircraft will move along a straight line with uniform speed.

Standard 11

Physics

A ball of mass $0.5\, kg$ moving with a velocity of $2\, m/sec$ strikes a wall normally and bounces back with the same speed. If the time of contact between the ball and the wall is one millisecond, the average force exerted by the wall on the ball is ……… $N$

easy

The motion of a particle of mass $m$ is described by $y=u t+\frac{1}{2} g t^{2} .$ Find the force acting on the particle.

medium

A body of mass $2\, kg$ moves under a force of $(2 \hat{ i }+3 \hat{ j }+5 \hat{ k }) \,N$. It starts from rest and was at the origin initially. After $4 \,s$, its new coordinates are $(8, b, 20)$. The value of $b$ is …….. . (Round off to the Nearest Integer)

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(JEE MAIN-2021)

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medium

A player caught a cricket ball of mass $150\ \mathrm{~g}$ moving at a speed of $20\ \mathrm{~m} / \mathrm{s}$. If the catching process is completed in $0.1\ \mathrm{~s}$, the magnitude of force exerted by the ball on the hand of the player is ………. $N$

medium

(JEE MAIN-2024)

An aircraft is moving with a velocity of $300\,m{s^{ - 1}}.$ If all the forces acting on it are balanced, then

Solution

Similar Questions

A ball of mass $0.5\, kg$ moving with a velocity of $2\, m/sec$ strikes a wall normally and bounces back with the same speed. If the time of contact between the ball and the wall is one millisecond, the average force exerted by the wall on the ball is ……… $N$

The motion of a particle of mass $m$ is described by $y=u t+\frac{1}{2} g t^{2} .$ Find the force acting on the particle.

A body of mass $2\, kg$ moves under a force of $(2 \hat{ i }+3 \hat{ j }+5 \hat{ k }) \,N$. It starts from rest and was at the origin initially. After $4 \,s$, its new coordinates are $(8, b, 20)$. The value of $b$ is …….. . (Round off to the Nearest Integer)

Explain why $(a)$ a horse cannot pull a cart and run in empty space, $(b)$ passengers are thrown forward from their seats when a speeding bus stops suddenly, $(c)$ it is easier to pull a lawn mower than to push it, $(d)$ a cricketer moves his hands backwards while holding a catch.

A player caught a cricket ball of mass $150\ \mathrm{~g}$ moving at a speed of $20\ \mathrm{~m} / \mathrm{s}$. If the catching process is completed in $0.1\ \mathrm{~s}$, the magnitude of force exerted by the ball on the hand of the player is ………. $N$

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Explain why

$(a)$ a horse cannot pull a cart and run in empty space,

$(b)$ passengers are thrown forward from their seats when a speeding bus stops suddenly,

$(c)$ it is easier to pull a lawn mower than to push it,

$(d)$ a cricketer moves his hands backwards while holding a catch.