Momentum (p) - class-XI
Description: momentum (p) | |
Number of Questions: 113 | |
Created by: Preeti Dasgupta | |
Tags: force and motion physics motion and laws of motion force and newton's laws laws of motion mechanics newton's laws of motion momentum force and laws of motion forces and motion force and newton's laws of motion |
What is the momentum of an object of mass $m$, moving with a velocity $v$?
A bullet of mass 40 g moving with a speed of $90 ms^{-1}$ enters a heavy wooden block and is stopped after a distance of 60 cm. The average resistance force exerted by the block on the bullet is
Momentum is a measure of
A long-jumper runs before jumping to
Force is directly proportional to
Which has a greater momentum, an elephant at rest or an ant in motion?
$SI$ units of momentum is _____
The SI unit of linear momentum is $kg \ m/s^{-1}$.
If the same force is applied on two bodies of different masses for the same time, then the change produced in the momentum of the two bodies is also same .
Momentum is a measure of quantity of motion.
If two bodies of different masses move with the same momentum, then heavier body will have greater velocity.
A car and a lorry are moving with same momentum, if same braking force is applied, then :
To reduce the momentum of a given body to half its original value then the velocity must be __________.
The linear momentum of a body at rest is zero.
A force acts on a body of mass 3 kg such that its velocity changes from 4 m s$^{-1}$ to 10 m s$^{-1}$. The change in momentum of the body is :
Which of the following statements are true?
Which of the following statements are correct regarding linear momentum of a body?
A force of 100 N acts on a body of mass 2 kg for 10 s. The change in momentum of the body is:
The time, in which a force of 2 N produces a change as momentum of 0.4 kg m s$^{-1}$ in the body is :
Coefficient of restitution is related to which of the follwing parameters?
two bodies having $K.E 4 J $ and $9 J$ have equal mass. And their momentum are $p _1$ and $p _2$ respectively then $p _1/p _2$
The changes in a momentum of a particle,when the kinetic energy is increased by 0.1% will be:-
Momentum is closely related to:
A metal ball does not rebound when struck on a wall, whereas a rubber ball of same mass when thrown with the same velocity on the wall rebounds. From this it is inferred that:
A cannon ball of mass $500 g$ is fired with a speed of $15 m s^{-1}$. Find its momentum.
The SI unit of momentum is :
A body of mass $60 kg$ has the momentum $3000 kg m s^{-1}$. Calculate the speed of the body.
Two balls A and B of masses $m$ and $2m$ are in motion with velocities $2v$ and $v$ respectively. What is the ratio of their momentum ?
A body of mass m moving with a velocity v is acted upon by a force. Write expression for change in momentum when $v\rightarrow c$.
The linear momentum of a ball of mass $50 g$ is $0.5 kg { m s }^{ -1 }$. Find its velocity.
The unit of linear momentum is:
A body of mass $5 kg$ is moving with velocity $2 { ms }^{ -1 }$. Calculate its linear momentum.
A body P has mass 2 m and velocity 5 v. Another body Q has mass 8 m and velocity 1.25 v. Find out the ratio of momentum of P and Q.
If the acceleration of an object is zero:
State whether given statement is True or False.
It's possible to have motion in the absence of a force
Momentum of a body is defined to be the product of its mass and:
If a car and a truck are moving with same momentum, the velocity of car is ........... the velocity of truck.
State whether the given statement is true or false :
A ball rolling along a floor doesn't continue rolling indefinitely. This is because of:
State whether given statement is True or False.
Linear momentum is always in the direction of velocity
A batsman hits back a ball straight in the direction of the bowler without changing its initial speed of $12 ms^{-1}$. If the mass of the ball is $0.15\ kg$, determine the change in momentum of the ball. (Assume linear motion of the ball)
A loaded transport truck with a mass of 38000 kg is travelling at 1.20 m/s. What will be the velocity of a 1400 kg car if it has the same momentum?
What is the momentum of an object of mass m, moving with a velocity v?
An example of a force applied in the direction of motion is:
A force of $10 N$ acts on a body of mass $20 kg$ for $10 s$ .Change in its momentum is:
The quantity that best represents the motion of a rigid body is
In which of the following cases the net force is not zero?
A ball of mass 'm' moves normal to a wall with a velocity 'u' and rebounds with the same speed. The change in momentum of the ball during the rebounding is
The momentum of a 10 kg body moving at 36 km/h is:
The velocity of a body of mass 20 kg increases to 400 kgm/s in 5s. If initial velocity was 10 m/s, what is the momentum before the force acts?
The combined effect of mass and velocity is taken into account by a physical quantity called :
A metallic ball strikes a wall and falls down whereas a tennis ball having the same mass and velocity bounces back. The conclusion from this is that :
Momentum is defined as :
A ball comes back after an elastic collision with a wall, If initial momentum of the ball is P, the impulse on the wall after the collision is :
A body of mass M collides with a wall with velocity V and rebounds with the same speed. Its change in momentum is equal to :
A disc of mass 10 g is kept floating horizontally by throwing 10 marbles per second against it from below. The marbles strike the disc normally and rebound downwards with the same speed. If the mass of each marble is 5 g, the velocity with which the marbles are striking the disc is $\displaystyle \left( g=9.8{ m }/{ { s }^{ 2 } } \right) $
Choose the wrong statement
A long-jumper runs before jumping because
A body of mass $5 kg$ undergoes a change in speed form $30 m/s$ to $40 {m}/{s}$. Its momentum would increase by
A number of discs, each of momentum $M kg {m}/{s}$ are striking a wall at the rate of $n$ discs per minute. The force associated with these discs, in newtons, would be
A body of mass $5 kg$ undergoes a change in speed from $20$ to $0.20 {m}/{s}$. The momentum of the body would
A body of mass $0.1 kg$ is moving with a velocity of $15 {m}/{s}$. The momentum associated with the ball will be
A hammer weighing $3 kg$, moving with a velocity of $10 {m}/{s}$, strikes against the head of a spike and drives it into a block of wood. If the hammer comes to rest in $0.025 s$, the impulse associated with the hammer will be
The combined effect of mass and velocity is taken into account by a physical quantity called
Momentum has the same units as that of
Newton used the phrase 'quantity of motion' for
$Mass \times velocity$ =
Momentum is a________quantity. Fill in the blank.
Momentum measures the amount of:
If the momentum of a flying brick is $50\ kg\ m/s$ and its mass is $10\ kg$. Calculate its velocity?
What will be the momentum of a stone having mass of $10\ kg$ when it is thrown with a velocity of $2\ m/s$?
Calculate the momentum of a bullet of $25\ g$ when it is fired from a gun with a velocity of $100\ m/s$:
When a bullet is fired from a rifle its momentum become $20\ kg\ m/s$. If the velocity of the bullet is $1000\ m/s$ what will be its mass?
A car having mass of $1000\ kg$ is moving with a velocity of $0.5\ m/s$. What will be its momentum?
A stone attains a momentum of $1\ kg\ m/s$ when it flies with a velocity of $2\ m/s$, then what will be the mass of the stone?
The mass of a goods lorry is $4000\ kg$ and the mass of goods loaded on it is $20000\ kg$. If the lorry is moving with a velocity of $2\ m/s$ what will be its momentum?
The momentum of a toy bus of $0.01\ kg$ moving with a velocity of $5\ m/s$ is:
What does the principle of conservation of linear momentum state?
Which of the following balls is easier to catch even though all of them are moving with the same velocity?
A force acts on a body of mass 3 kg such that its velocity changes from 4 m $s^{-1}$ to 10 m $s^{-1}$.Calculate the change in the momentum of the body.
To reduce the momentum of a given body to half its original value, its velocity must be ___________.
The momentum of a massive object at rest is
A parachutist with total weight $75kg$ drops vertically onto a sandy ground with a speed of $2m{ s }^{ -1 }$ and comes to a halt over a distance of $0.25m$. The average force from the ground on her is close to
Which of the following statements is/are correct for internal forces?
Momentum is a measure of:
Momentum has the same units as that of:
A football player kicks a $0.25kg$ ball and imparts it a velocity of $10m/s$. The contact between foot and the ball is only $\cfrac{1}{50}$th of a second. The kicking force is
A bullet of mass $40\ g$ is fired from a gun of mass $10\ kg$. If velocity of bullet is $400\ m/s$, then the recoil velocity of the gun will be
A force of 100 dynes acts on mass of 5 gm for 10 sec. The velocity produced is:
Jahnvi is walking at $1.63 m/s$. If she weighs $583 N$, what is the magnitude of her momentum?
The moment P (in $kg\, ms^{-1}$) of a particle is varying with time t (in second) as $p=2+3t^2$. The force acting on the particle at $t=3s$ will be
A homogeneous disc of mass 2 kg and radius 15 cm is rotating about its axis (which is fixed) with an angular velocity of 4 rad/s. The linear momentum of the disc is :
Which of the following must be true for the sum of the magnitude of the momenta of the individual particles in the system?
A force of $10 \,N$ acts on a body of mass $0.5 \,kg$ for $0.25 \,sec$ starting from rest. What is its momentum now?
A rocket is moving at a constant speed in space by burning its fuel and ejecting out the burnt gases through a nozzle.
A car of mass $600 kg$ is moving with a speed of $10 m s^{-1}$ while a scooter of mass $80 kg$ is moving with a speed of $50 m s^{-1}$. Compare their momentum.
What is the value of $p _1$ and $m _2$ ?
m (kg) | v (m/s) | p = mv (kgm/s) |
---|---|---|
85 | 60 | $p _1$ |
$m _2$ | 2.5 | 6.25 |
A bullet of mass $50 g$ moving with an initial velocity $100 m {s}^{-1}$, strikes a wooden block and comes to rest after penetrating a distance $2 cm$ in it. Calculate: (i) initial momentum of the bullet, (ii) final momentum of the bullet.
A hockey ball of mass 200 g travelling at $10\ ms^{-1}$ is struck by a hockey stick so as to return it along its original path with a velocity of $5\ ms^{-1}$. Calculate the change of momentum which occurred in the motion of the hockey ball by the force applied by the hockey stick:
The change in momentum of a vehicle weighing 2000 kg when its speed increases from 36 km/h to 72 km/h uniformly is :
A molecule of mass $m$ of an ideal gas collides with the wall of the vessel with the velocity $v$ and returns back with the same velocity. The change in the linear momentum of the molecule will be:
A 4-kilograms ball slides over horizontal friction less surface with velocity of 1 meter per second ball strike the post and rebounds upward perpendicular to the initial direction with same speed.
Calculate the change of momentum of the ball in initial direction.
A cricket ball of mass 500 g is moving with speed of $36 \,km\,h^{-1}$. It is reflected back with the same speed. What is the impulse applied on it?
A mass of 2 kg at rest travels for 4 seconds with an acceleration of 1.5 m $s^{-2}$. Find the gain of the momentum of the body.
A force acts on a body of mass 3 kg such that its velocity changes from $4 \,m\, s^{-1}$ to $10 \,m\, s^{-1}$. The change in momentum of the body is:
The time, in which a force of 2 N produces a change in momentum of $0.4\, kg\, m\, s^{-1}$ in a body whose mass is 1 kg is:
The time, in which a force of 4 N produces a change in momentum of 0.4 kg m $s^{-1}$ in the body is:
Two bodies $A$ and $B$ having mass $M$ and $m$ respectively possesses same kinetic energy. Given that $M> m$. If ${\rho} _{A}$ and ${\rho} _{B}$ be their momentum, then which of the following statements is true?
For constant non zero mass, momentum versus velocity graph is a:
A body of mass $2 kg$ is sliding with a constant velocity of $4 m/s$ on a frictionless horizontal table. The net force required to keep the body moving with the same velocity is