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Q.

A juggler juggling with 5 balls project a ball up after every 0.4 sec maximum height attained by each ball is

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a

5 m

b

10 m

c

20 m

d

$5 \sqrt{2} m$

answer is D.

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Detailed Solution

Time of flight = 5 × 0.4s = 2s

Time of ascent will be
$\Rightarrow t_{a} = \frac{u}{g} = 1 s$

Maximum height reached is

$\Rightarrow H_{max} = \frac{u^{2}}{2 g} = \frac{g}{2}$ =5m

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A juggler juggling with 5 balls project a ball up after every 0.4 sec maximum height attained by each ball is