projectile motion

A person throws a bottle into a dustbin at the same height as he is 2m away at an angle of 45Â°. The velocity of the bottle thrown is:
Q
1. g

2. âˆšg

3. 2g

4.âˆš2g
g comes inside the root in respective cases.

7 Answers

1057

Ketan Chandak ·2012-05-09 02:52:49

√2g is the correct answer....

how????

it is √2 g

APPLY projectile range formula (u^2)sin2a/g=2
a=45Â° so get u =âˆš(2g)

put the value in the formula for range.. ans will come out mentally.

simple √2g..

Guys P.S that at an angle 45Â° ...Range is maximum....

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