Question

A projectile is shot from the ground at a velocity of `6 m/s` and at an angle of `(7pi)/12`. How long will it take for the projectile to land?

Answer 1

`t_e~=1,182s`

Explanation:

`t_e:" time elapsed ; " v_i: "initial velocity ; "alpha:"angle"`
`t_e=(2*v_i*sin alpha)/g`
`alpha=(7 pi)/12*180/pi=105^o`
`sin 105=sin 75=0,966" g:9,81"`
`t_e=(2*6*0,966)/(9,81)`
`t_e~=1,182s`