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Q.

Is it true that when a cricket ball and tennis ball of the same size are released from a certain height in a vacuum, both the balls will reach the ground in equal time?


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a

True

b

False 

answer is A.

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Detailed Solution

The above statement is true.
The gravitational acceleration for all objects is the same, independent of their masses. If both the objects of heavy and lighter mass fall in the absence of air, the only force acting on them would be a gravitational force, as there would be no air friction. So the speed will be the same for both objects. Hence, we can conclude that when a cricket ball and tennis ball of the same size are released from a certain height in a vacuum, both the balls will reach the ground in equal time.
 
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