Ball A is dropped from rest from a window. At thesame instant, ball B is thrown

Question

Ball A is dropped from rest from a window. At thesame instant, ball B is thrown downward; and ball C is thrownupward from the same window. Which statement concerning the ballsis necessarily true if air resistance is neglected? A ) All three balls have the same velocity at anyinstant. B ) All three balls strike the ground at the sametime. C ) All three balls have the same acceleration at anyinstant. D ) All three balls reach the ground with the samevelocity. E ) At some instant after it is thrown, theacceleration of ball C is zero.
Ball A is dropped from rest from a window. At thesame instant, ball B is thrown downward; and ball C is thrownupward from the same window. Which statement concerning the ballsis necessarily true if air resistance is neglected? A ) All three balls have the same velocity at anyinstant. B ) All three balls strike the ground at the sametime. C ) All three balls have the same acceleration at anyinstant. D ) All three balls reach the ground with the samevelocity. E ) At some instant after it is thrown, theacceleration of ball C is zero. Ball A is dropped from rest from a window. At thesame instant, ball B is thrown downward; and ball C is thrownupward from the same window. Which statement concerning the ballsis necessarily true if air resistance is neglected?

Explanation / Answer

      All ballsexperience only gravitational force in downwarddirection during their motion .       Hence, they experiencesame acceleration i.e., acceleration due to gravity ( downward)    Ans: OPTION C: All three balls havethe same acceleration at any instant.

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