Home
Class 9
PHYSICS
State the law of conservation of momentu...

State the law of conservation of momentu.Explain the conservation of momentum in each of the following cases:
(i)A bullet is fired from the gun
(ii)A rocket taking off from the ground'

Text Solution

Verified by Experts

(i) When the bullet is fired from a gun, the bullet acquires a velocity in the direction of fire. By the law of conservation of momentum, the gun recoils. The mass of bullet being small as compared to that of gun, the bullet acquires a great velocity while the gun recoils with less velocity.
(ii) The rocket throws a stream of burnt gases in the downward direction with a great velocity So the gases have a great momentum in the downward direction. According to the conservation of momentum, the rocket get an equal and opposite momentum in the upward direction.
Promotional Banner

Topper's Solved these Questions

  • FORCE AND LAWS OF MOTION

    KUMAR PRAKASHAN|Exercise QUESTIONS AND ANSWERS(Answer the following questions in detail:)|4 Videos

  • FORCE AND LAWS OF MOTION

    KUMAR PRAKASHAN|Exercise QUESTIONS AND ANSWERS(Solve the following examples/numericals :)|8 Videos

  • FORCE AND LAWS OF MOTION

    KUMAR PRAKASHAN|Exercise QUESTIONS AND ANSWERS(Distnguish between the following:)|4 Videos

  • GRAVITATION

    KUMAR PRAKASHAN|Exercise ACTIVITY 10.4|2 Videos

Similar Questions

Explore conceptually related problems

State the explain the law of conservation of momentum of the system of particle.

A projectile is fired horizontally with a velocity of 98 ms^(-1) from the top of a hill 490 m high. Find (i) the time taken to reach the ground (ii) the distance of the target from the hill and (iii) the velocity with which the projectile hits the ground.

A compass needle is placed near a current - carrying straight wire . State your observation for the following case and give reason for the same in each case : (1) Direction of electric current in the wire is increased . (2) Magnitude of electric current in the wire is increased . (3) Teh compass needle is displaced away from the straight wire .

A hunter aims his gun and fires a bullet directly toward's a monkey sitting on a distance tree. At the intant the bullet leaves the barrel of the gun, the monkey drops from the tree : (i) Will the bullet hit the aim ? (ii) What Path of bullet will be appeared to monkey ? (iii) If monkey does not drop from the tree will bullet hit the aim ?

A balloon starts ascending from the ground at a constant speed of 25 m//s . After 5 s, a bullet is shot vertically upwards from the ground. (i) What should be the minimun speed of the bullet so that it may reach the balloon? (ii) The bullet is shot at twise the speed calculated in (i). Find the height at which it passes the balloon.