Gamma Question Bank for Medical Physics>Chapter 6 - Work, Energy and Power>Assignment>Q 51

MEDIUM

NEET

IMPORTANT

Earn 100

A ball of mass $m$ is released from the top of an inclined plane of inclination $θ$ as shown. It strikes a rigid surface at a distances $\frac{3 l}{4}$ from top elastically. Impulse imparted to ball by the rigid surface is

25% studentsanswered this correctly

Important Questions on Work, Energy and Power

MEDIUM

NEET

IMPORTANT

Gamma Question Bank for Medical Physics>Chapter 6 - Work, Energy and Power>Assignment>Q 52

A tennis ball bounces down a flight of stairs, striking each step in turn and rebounding to the height of the step above. If the height of each step is $d,$ the coefficient of restitution is

Question Image

MEDIUM

NEET

IMPORTANT

Gamma Question Bank for Medical Physics>Chapter 6 - Work, Energy and Power>Assignment>Q 53

A ball is thrown from the ground with velocity

u

at an angle

θ

with horizontal. The horizontal range of the ball on the ground is

R .

If the coefficient of restitution is

e,

then the horizontal range after the collision is

MEDIUM

NEET

IMPORTANT

Gamma Question Bank for Medical Physics>Chapter 6 - Work, Energy and Power>Assignment>Q 54

A stationary particle explodes into two particles of masses

x

and

y,

which move in opposite directions with velocity

v_{1}

and

v_{2} .

The ratio of their kinetic energies

(E_{1} : E_{2})

is

MEDIUM

NEET

IMPORTANT

Gamma Question Bank for Medical Physics>Chapter 6 - Work, Energy and Power>Assignment>Q 55

Two balls of equal mass undergo head on collision while each was moving with speed

6 m s^{- 1} .

If the coefficient of restitution is

\frac{1}{3},

the speed of each ball after impact will be

MEDIUM

NEET

IMPORTANT

Gamma Question Bank for Medical Physics>Chapter 6 - Work, Energy and Power>Assignment>Q 56

A ball of mass

M

moving with speed

V

collides perfectly inelastically with another ball of mass

m

at rest. The magnitude of impulse imparted to the first ball is

MEDIUM

NEET

IMPORTANT

Gamma Question Bank for Medical Physics>Chapter 6 - Work, Energy and Power>Assignment>Q 57

A ball of mass

m

is dropped from height

h

on a horizontal floor which collides with it with speed

U .

If coefficient of restitution in floor is

θ,

then impulse imparted to ball by the floor on its second rebounce is

MEDIUM

NEET

IMPORTANT

Gamma Question Bank for Medical Physics>Chapter 6 - Work, Energy and Power>Assignment>Q 58

A ball is dropped from height

h

on a horizontal floor. If it loses

60 %

of its energy on hitting the floor then height upto which it will rise after first rebounce is

MEDIUM

NEET

IMPORTANT

Gamma Question Bank for Medical Physics>Chapter 6 - Work, Energy and Power>Assignment>Q 59

A ball dropped from height

h

on a horizontal floor goes up to the height

\frac{3 h}{4}

after hitting the floor. Fraction of energy of ball lost in the impact is