MEDIUM

NEET

IMPORTANT

Earn 100

Body $A$ of mass $4 m$ moving with speed $u$ collides with another body $B$ of mass $2 m$ at rest. The collision is head on and elastic in nature. After the collision, the fraction of energy lost by the colliding body $A$ is

47.83% studentsanswered this correctly

Important Questions on Work, Energy and Power

MEDIUM

NEET

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 4 - Work, Energy and Power>NEET - 5th May 2019>Q 6

A mass

m

is attached to a thin wire and whirled in a vertical circle. The wire is most likely to break, when

EASY

NEET

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 4 - Work, Energy and Power>NEET - 5th May 2019>Q 7

A force

F = 20 + 10 y

acts on a particle in

y

-direction where

F

is in Newton and

y

is in meter. Work done by this force to move the particle from

y = 0

y = 1 m

EASY

NEET

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 4 - Work, Energy and Power>NEET - 5th May 2019>Q 8

The work done to raise a mass

m

from the surface of the earth to a height

h

, which is equal to the radius of the earth is:

MEDIUM

NEET

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 4 - Work, Energy and Power>NEET - 6th May 2018>Q 9

A body initially at rest and sliding along a frictionless track from a height $h$ (as shown in the figure) just completes a vertical circle of diameter $A B = D$ . The height $h$ is equal to,
Question Image

MEDIUM

NEET

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 4 - Work, Energy and Power>NEET - 6th May 2018>Q 10

A moving block having mass

m,

collides with another stationary block having mass

4 m .

The lighter block comes to rest after collision. When the initial velocity of the lighter block is

v,

then the value of coefficient of restitution

(e)

will be

MEDIUM

NEET

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 4 - Work, Energy and Power>NEET - 7th May 2017>Q 11

Consider a drop of rain water having mass

1 g

falling from a height of

1 km

. It hits the ground with a speed of

50 m s^{- 1}

. Take

g

constant with a value

10 m s^{- 2}

. The work done by the (i) gravitational force and the (ii) resistive force of air is

EASY

NEET

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 4 - Work, Energy and Power>NEET - 24th July 2016>Q 12

Two identical balls

A

and

B

having velocities of

0.5 m s^{- 1}

and

- 0.3 m s^{- 1}

, respectively, collide elastically in one dimension. The velocities of

B

and

A

after the collision, respectively, will be

EASY

NEET

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 4 - Work, Energy and Power>NEET - 24th July 2016>Q 13

A particle moves from a point

(- 2 \hat{i} + 5 \hat{j})

(4 \hat{j} + 3 \hat{k})

when a force of

(4 \hat{i} + 3 \hat{j}) N

is applied. How much work has been done by the force?

Body A of mass 4m moving with speed u collides with another body B of mass 2m at rest. The collision is head on and elastic in nature. After the collision, the fraction of energy lost by the colliding body A is

Important Questions on Work, Energy and Power

Learn and Prepare for any exam you want !

Body $A$ of mass $4 m$ moving with speed $u$ collides with another body $B$ of mass $2 m$ at rest. The collision is head on and elastic in nature. After the collision, the fraction of energy lost by the colliding body $A$ is