Question

Pls Answer this question Properly to get 50 points

Answer 1

Answer:

397.832 m

Explanation:

Let,

s = 100

g = -10 ---------(acceleration downwards)

v = 0 ---------- (ball stops when it has reached highest point)

u = u

substituting the values in the formula $v^{2} -u^{2} =2gs$ we get,

-$u^{2} = 2 * -10*100$

$-u ^{2}= -2000$

$u = 20\sqrt{5}$

which is,

$u =20*2.23\\u= 44.6 m/s$

if u is doubled then u = 89.2 m/s

substituting new value of u in $v^{2} -u^{2} =2gs$ we get,

$0^{2} -[89.2]^{2} = 2*-10*s$

-795664 = -20s

therefore s is equal to

-795664/-20

S = 397.832 m

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Answer 2

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