Question

a stone is projected upward with a velocity of 90 km per hour calculate maximum height archvied by stone​

Answer 1

Answer:

10m

Explanation:

Let u be the initial velocity and h be the maximum height attained by the stone.

v 12=u2−2gh,

(10) square =u 2 −2×10× 2h

100=u 2

2square −10h ....(i)

Again at height h,

v

=u 2 −2gh

(0) 2 =u 2 −2×10×h

u 2 =20h ... (ii)

So, from Eqs. (i) and (ii) we have

100=10h

h=10m