Question

A projectile is shot from the ground at a velocity of `14 m/s` and at an angle of `(7pi)/12`. How long will it take for the projectile to land?

Answer 1

`x_(max)~=-9,9898m`

Explanation:

`alpha=7pi/12*180/pi=105^o`
`x_(max)=(v_i^2*sin2 alpha)/g`
`x_(max)=(14^2*sin210)/(9,81)`
`x_(max)=(196*(-0,5))/(9,81)`
`x_(max)~=-9,9898m`