Physics Crash Course MHT-CET>Chapter 2 - Laws of Motion>Exercise 1>Q 278

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A block of mass $2 kg$ collides with identical stationary block head on elastically with velocity of $20 m s^{- 1}$ . After collision second block collides with the third block of mass $2 kg$ initially at rest. If they collide head on perfectly inelastically then the velocity of their combination will be

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Important Questions on Laws of Motion

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Physics Crash Course MHT-CET>Chapter 2 - Laws of Motion>Exercise 1>Q 279

In elastic collision,

100 %

energy transfer takes place when

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Physics Crash Course MHT-CET>Chapter 2 - Laws of Motion>Exercise 1>Q 280

A mass of

20 kg

moving with a speed of

10 m s^{- 1}

collides with another stationary mass of

5 kg

. As a result of the collision, the two masses stick together. The kinetic energy of the composite mass will be

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Physics Crash Course MHT-CET>Chapter 2 - Laws of Motion>Exercise 1>Q 281

A mass

m

moving horizontally (along the

x

-axis) with velocity

v

collides and sticks to mass of

3 m

moving vertically upward (along the

y

-axis) with velocity

2 v

. The final velocity of the combination is

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Physics Crash Course MHT-CET>Chapter 2 - Laws of Motion>Exercise 1>Q 282

A metal ball of mass

2 kg

moving with a velocity of

36 km h^{- 1}

has a head on collision with a stationary ball of mass

3 kg

. If after the collision, the two balls move together, the loss in kinetic energy due to collision is

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Physics Crash Course MHT-CET>Chapter 2 - Laws of Motion>Exercise 1>Q 283

Two particles of equal mass

m

are moving with velocities

v \hat{i}

and

v (\frac{\hat{i} + \hat{j}}{2})

respectively. If the particles collide completely inelastically, then the energy lost in the process is

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Physics Crash Course MHT-CET>Chapter 2 - Laws of Motion>Exercise 1>Q 284

A ball is dropped on a smooth inclined plane and is observed to move horizontally after the impact. The coefficient of restitution between the plane and ball is

e

. The inclination of the plane is

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Physics Crash Course MHT-CET>Chapter 2 - Laws of Motion>Exercise 1>Q 285

A particle

A

of mass

m

collides head-on with another stationary particle

B

of the same mass

m .

The kinetic energy lost by the colliding particle

A

will be maximum if the coefficient of the restitution is

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Physics Crash Course MHT-CET>Chapter 2 - Laws of Motion>Exercise 1>Q 286

Two balls approach each other with the same speed and undergo head-on elastic collision after which one of them of mass

3 kg

comes to rest. The mass of the other ball is,