English

What is the Si Unit of Momentum ? - Science

Advertisements
Advertisements

Question

What is the SI unit of momentum ?

One Line Answer

Solution

The SI unit of momentum is kilogram meters per second(kg.m/s).

shaalaa.com
  Is there an error in this question or solution?
Chapter 2: Force and Laws of Motion - Very Short Answers 1 [Page 55]

APPEARS IN

Lakhmir Singh Physics (Science) [English] Class 9 ICSE
Chapter 2 Force and Laws of Motion
Very Short Answers 1 | Q 3 | Page 55

Video TutorialsVIEW ALL [1]

RELATED QUESTIONS

Two billiard balls, each of mass 0.05 kg, moving in opposite directions with speed 6 ms-1collide and rebound with the same speed. What is the impulse imparted to each ball due to the other?


Figure  shows a man standing stationary with respect to a horizontal conveyor belt that is accelerating with 1 m s–2. What is the net force on the man? If the coefficient of static friction between the man’s shoes and the belt is 0.2, up to what acceleration of the belt can the man continue to be stationary relative to the belt? (Mass of the man = 65 kg.)


A stream of water flowing horizontally with a speed of 15 m s–1 gushes out of a tube of cross-sectional area 10–2 m2, and hits a vertical wall nearby. What is the force exerted on the wall by the impact of water, assuming it does not rebound?


Explain why, it is easier to stop a tennis ball than a cricket ball moving with the same speed.


A body of mass 2 kg is at rest. What should be the magnitude of force which will make the body move with a speed of 30 m/s at the end of 1 s ?


A 150 g ball, travelling at 30 m/s, strikes the palm of a player’s hand and is stopped in 0.05 second. Find the force exerted by the ball on the hand.


State the law of conservation of momentum.


Discuss the conservation of momentum in each of the following cases :
(i) a rocket taking off from ground.
(ii) flying of a jet aeroplane.


A ball X of mass 1 kg travelling at 2 m/s has a head-on collision with an identical ball Y at rest. X stops and Y moves off. Calculate the velocity of Y after the collision.


Suppose a ball of mass m is thrown vertically upward with an initial speed v, its speed decreases continuously till it becomes zero. Thereafter, the ball begins to fall downward and attains the speed v again before striking the ground. It implies that the magnitude of the initial and final momentums of the ball are the same. Yet, it is not an example of conservation of momentum. Explain why?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×