Question

A projectile is shot from the ground at a velocity of `28 m/s` and at an angle of `(pi)/2`. How long will it take for the projectile to land?

Answer 1

`t=5,71 " s"`

Explanation:

`v_i=28 " m/s"`
`if alpha=(pi/2) " ; "sin (pi/2)=1`

`t=(2*v_i*sin alpha)/g`

`t=(2*28*1)/(9,81)`

`t=5,71 " s"`