Question

A plane mirror is placed horizontally on level ground at a distance of 60 m

Answer 1

Answer:

It is inappropriate question

Answer 2

Answer:

Heya.....mate......

Here's ur answer :

Given that,

»» Horizontal Range (R) = 60 m

»for maximum range, u² = 1.10

»Angle of projection (α) = ?

» g = 9.8 m/s

We have,

»»» R = u²sin(2α) / g

.•. sin(2α) = Rg/u²

«« sin(2α) = 60*9.8/1.10

»» sin(2α) = 588/1.10

»« sin(2α) = 534.5

.°. »» α = sin^-1(534.5)/2

.°. »» α = (21/5)rad ,,

»»Hope it helps!!

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