Self Studies

Motion in A Str...

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  • Question 1
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    AA and BB are arguing about uniform acceleration. AA states that acceleration means "the longer you go." BB states that acceleration means "the further you go." Who is right?

  • Question 2
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    A ball is thrown upwards in a train which is accelerating. The ball will fall ______________.

  • Question 3
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    A body, when dropped from a certain height, falls to the ground in 4 s. What is the time taken by the body to cover the last 100 cm?  (Takeg=10ms2)\displaystyle (Take\quad g={ 10\quad ms }^{ -2 })

  • Question 4
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    A body under uniformly accelerated motion covers 20 m20   m and 60 m60   m in first two seconds of time from the beginning. The body starts with an initial velocity

  • Question 5
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     Which one of the following represents the displacement-time graph of two objects a and b moving with zero relative speed ? 

  • Question 6
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    A ball is thrown vertically upwards with a velocity uu. What is the maximum height to which it will rise before falling back?

  • Question 7
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    A ball is dropped on the floor from a height of 10 m. It rebounds to a height of 2.5 m.If the ball is in contact with the floor for 0.01 sec, then average acceleration during contact is 

  • Question 8
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    If a car at rest accelerates uniformly and attains a speed of 72 km/hr in 10 s, then it covers a distance of:

  • Question 9
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    An automobile travelling with a speed of 72kmh1\displaystyle 72 km {h}^ {-1} , can be stopped within a distance of 30 m, by applying brakes. What will be the stopping distance, if the automobile speed is increased to  3\displaystyle \sqrt { 3 } times and the same braking force is applied?

  • Question 10
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    A stone dropped from the top of a building taken 5 s to reach the ground. If it is stopped momentarily 4 s after it is dropped and then released again, how much time would it take from the moment it is released again to reach the ground? (Takeg= 10ms2)\displaystyle (Take\quad g = 10 {ms} ^{-2})

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