An aluminium ball 'A' and an iron ball 'B' of same volume are thrown horizontally with the same velocity from the top of a tower of certain height. Neglecting air resistance, then

Easy

A

B reaches the ground earlier than A at the same distance from the tower
B

Both reach the ground at the same time but A reaches at a nearer distance than B from the tower
C

Both reach the ground at the same time and at the same distance from the tower
D

A reaches the ground earlier than B at the same distance from the tower

Solution

Both reaches at the same point simultaneously as $t = \sqrt{\frac{2 H}{g}} and R = U \sqrt{\frac{2 H}{g}}$ .

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