Q. Simultaneously, from the top of a tower, when ball- is thrown horizontally and ball- is just dropped, in the absence of air resistance which among the following options is correct?

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Solution:

When ball- drops from the top of a tower horizontally and at the same time, ball- is dropped vertically downward from the tower, then both balls will move under the effect of same value of gravitational acceleration . Therefore, both balls will reach at the same time on the ground.