Self Studies

Motion in A Str...

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  • Question 1
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    A ball is thrown vertically upwards with a velocity of 10ms110 ms^-1. IT returns to the ground with a velocity of9ms1 9 ms^-1. If g=9.8ms2g = 9.8 ms^-2, then the maximum height attained by the ball is nearly ( assume a resistance to be uniform)

  • Question 2
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    Two cyclists are travelling the same distance at the speed of 1010 km\hr and 1515 km\hr respectively. If one cyclist takes 4040 minutes or more to cover the distance, then what distance (in km) are they travelling?

  • Question 3
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    A stone A is thrown at an angle of 45045^0 to the horizontal. Another stone B is thrown with 20ms120ms^{-1} horizontally as shown in figure. They collide in mid-air. Find the distance BC

  • Question 4
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    A system is shown in the figure and man is pulling the rope from both sides with constant speed u'u'. Then the speed of the block will be (MM moves vertically):

  • Question 5
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    A ball is dropped from a height of 7.27.2m. It bounces back to 3.23.2m after striking the floor. The ball remains in contact with the floor for 2020ms. Given that g=10ms2g=10 ms^{-2}, the average acceleration of the ball during the contact is:

  • Question 6
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    An object is tossed vertically into the air with an initial velocity of 8 m/s. Using the sign convention upwards as positive, how does the vertical component of the acceleration aya_y of the object (after leaving the hand) vary during the flight of the object?
    o

  • Question 7
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    A scooterist is moving on a straight road with speed 10  ms110\;m{s^{ - 1}} . A bus ahead of scooterist by 32 m, starts from rest with an acceleration 1  ms21\;m{s^{ - 2}}, if both are moving in the same direction then the time after which scooter overtakes the bus is:

  • Question 8
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    A balloon is rising with unifrom speed 14  ms114\;m{s^{ - 1}} .At a height 98m98 m from the ground a stone is dropped from the balloon.The time taken by the stone to strike the ground is (g=10  m/s2)\left( {g = 10\;m/{s^2}} \right):

  • Question 9
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    A particle initially at rest starts moving in a straight line with constant accelration. it attains a speed of 10m/s10m/s in 2s after which it deaccelerates with constant rate and comes to rest in the next 3 seconds.An average speed of the particle during the entire motion will be 

  • Question 10
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    A rocket of initial mass 5000kg5000 kg ejects gets at a constant rate of 60kg/s60kg/s with a relative speed of 2050m/s2050 m/s. Acceleration of the rocket 15 second after it is blasted off from the surface of earth will be (g=10m/s2g = 10m/{s}^{2}?)

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