Question

In the above problem, what is the component of its velocity perpendicular to the plane when it strikes at A ?

Answer 1

`v_y = u_y + a_yt`
`=(10 sin30^@) + (-g cos 30^@) T`
`= 5 - 10 xx (sqrt3)/2 xx 2/(sqrt3)`
`= -5 m//s`.