Question

A projectile is shot from the ground at a velocity of `8 m/s` and at an angle of `(3pi)/4`. How long will it take for the projectile to land?

Answer 1

`t_e=1,15 " s"`

Explanation:

`"given data:"`
`alpha=(3pi)/4" projectile angle"`

`v_i=8 m/s " initial velocity of object"`
`g=9,81 m/s^2`

`t_e=?" time elapsed"`

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

`t_e=(2*8*0,707)/(9,81)`

`t_e=1,15 " s"`