A foot - ball player hits tha ball with speed `20ms^(-1)` with angle `30^(@)` with respect to horizontal direction as shown in the figure. The goal post is at distance of 40 m from him. Find out whether ball reaches the goal post

Explanation

Range of the projective
`R=(u^(2)sin2theta)/(g)=(400xxsin60^(@))/(9.8)=(400xx(sqrt3//2))/(9.8)=35.35m`
The distance of goal post is 40 m. But the range of the ball is 35.35 m only. So ball will not reach the goal post.