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Physics Part-I

Laws of motion

A shell of mass 0.020 kg is fired by a gun of mass 100 kg. If

Physics Part-I

Class 11

NCERT

Chapter 1: Physical World

16 questions

Chapter 2: Units and Measurements

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Chapter 3: Motion in Straight Line

50 questions

Chapter 4: Motion in a Plane

43 questions

Chapter 5: Laws of motion

52 questions

Two billiard balls each of mass

0.05 k g

moving in opposite directions with speed

6 m s^{- 1}

collide and rebound with the same speed. What is the impulse imparted to each ball due to the other?

A shell of mass

0.020 k g

is fired by a gun of mass

100 k g

. If the muzzle speed of the shell is

80 m / s

, what is the recoil speed of the gun?

A batsman deflects a ball by an angle of

9 0^{o}

without changing its initial speed, which is equal to

54 km / h r

. What is the impulse imparted to the ball? (Mass of the ball is

0.15 k g

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Chapter 6: Work, Energy and Power

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Question

Easy

Solving time: 1 mins

A shell of mass $0.020 k g$ is fired by a gun of mass $100 k g$ . If the muzzle speed of the shell is $80 m / s$ , what is the recoil speed of the gun?

Views: 6,058 students

Updated on: Feb 27, 2024

Book:

Physics Part-I (NCERT)

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Chloe Discussed

A shell of mass

0.020 k g

is fired by a gun of mass

100 k g

. If the muzzle speed of the shell is

80 m / s

, what is the recoil speed of the gun?

5 mins ago

Discuss this question LIVE

5 mins ago

Text solutionVerified

Mass of the gun,

M = 100

Mass of the shell,

m = 0.020

Muzzle speed of the shell,

v = 80

m/s

Recoil speed of the gun

= V

Both the gun and the shell are at rest initially.

The initial momentum of the system

m = 0

Final momentum of the system

= m v - M V

Here, the negative sign appears because the directions of the shell and the gun are opposite to each other.

According to the law of conservation of momentum:

Final momentum = Initial momentum

m v - M V = 0

V = m v / M

V=0.02\times \dfrac{80 }{100} = 0.016 \ m/s

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Practice more questions from Physics Part-I (NCERT)

Two billiard balls each of mass

0.05 k g

moving in opposite directions with speed

6 m s^{- 1}

collide and rebound with the same speed. What is the impulse imparted to each ball due to the other?

A shell of mass

0.020 k g

is fired by a gun of mass

100 k g

. If the muzzle speed of the shell is

80 m / s

, what is the recoil speed of the gun?

A batsman deflects a ball by an angle of

9 0^{o}

without changing its initial speed, which is equal to

54 km / h r

. What is the impulse imparted to the ball? (Mass of the ball is

0.15 k g

View all

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Question Text	A shell of mass $0.020 k g$ is fired by a gun of mass $100 k g$ . If the muzzle speed of the shell is $80 m / s$ , what is the recoil speed of the gun?
Updated On	Feb 27, 2024
Topic	Laws of motion
Subject	Physics
Class	Class 11
Answer Type	Text solution:1 Video solution: 9
Upvotes	961
Avg. Video Duration	7 min

A shell of mass $0.020 k g$ is fired by a gun of mass $100 k g$ . If the muzzle speed of the shell is $80 m / s$ , what is the recoil speed of the gun?

Text solutionVerified

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