MCQ
A ball thrown by a boy is caught by another after $2\ sec$. some distance away in the same level. If the angle of projection is $30^o $, the velocity of projection is ......... $m/s$
- ✓$19.6 $
- B$9.8 $
- C$14.7 $
- DNone of these
✓
Answer
Correct option: A.
$19.6 $
a
(a) $T = \frac{{2u\sin \theta }}{g}$
(a) $T = \frac{{2u\sin \theta }}{g}$
$⇒$ $u = \frac{{T \times g}}{{2\sin \theta }} = \frac{{2 \times 9.8}}{{2 \times \sin 30}} = 19.6\,m/s$
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