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A ball is projected from a point A with ...

A ball is projected from a point `A` with some velocity at an angle `30^@` with the horizontal as shown in (Fig. 5.204). Consider a target at point `B`. The ball will hit the target if it thrown with a velocity `v_0` equal to.
.

A

`5 m s^-1`

B

`6 m s^-1`

C

`7 m s^-1`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
D
(d) Applying equation of trajectory, we get
`0.5 = (sqrt(3))/(2) tan 30^@ - (g(sqrt((3)/(2))))/(2 v_0^2 cos^2 30^@) rArr v_0 = oo`.
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