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Laws of Motion ...

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  • Question 1
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    A shell of mass 10 kg is moving with a velocity of 10 ms–1. When it blasts, forms two parts of mass 9 k and 1 kg respectively. If the 1st mass is stationary, thenvelocity of the 2nd is

  • Question 2
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    A wagon weighing 1000 kg is moving with a velocity 50 km/hr on smooth horizontal rails. A mass of 250 kg is dropped into it. The velocity with which it moves now is

  • Question 3
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    If a force of 250 N act on body, the momentum acquired is 125 kg-m/s. What is the period for which force acts on the body?

  • Question 4
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    A jet engine works on the principle of

  • Question 5
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    A rocket of mass 100 kg burns 0.1 kg of fuel per sec. If velocity of exhaust gas is 1 km/s, then it lifts with an acceleration of

  • Question 6
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    The momentum is most closely related to

  • Question 7
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    A body of mass m = 3.513 kg is moving along the x–axis with a speed of 5.0 ms–1. The magnitude of itsmomentum is recorded

  • Question 8
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    A force of 50 dyne is acted on a body of mass 5 g which is at rest for an interval of 3 seconds, then impulse is

  • Question 9
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    A body of mass 1000 kg is moving horizontally with a velocity 50 m/s. A mass of 250 kg is added. Find the final velocity

  • Question 10
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    A body of mass 0.25 kg is projected with muzzle velocity 100 ms–1 from a tank of mass 100 kg. What is the recoil velocity of the tank?

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