Question

A body is thrown with a velocity of $9.8$ $m{s}^{-1}$ making an angle of ${30}^{\circ }$ with the horizontal. It will hit the ground after a time :

• A. $3s$
• B. $2s$
• C. $1.5s$
• D. $1s$

Answer 1

The correct option is D $1s$

The time after it will hit the ground is given by $t=\frac{2usin\theta }{g}=\frac{2\ast 9.8\ast 1/2}{9.8}=1sec$