Question

A stone is thrown vertically upward with an initial speed of 19.5 m/s. It will rise to a maximum

height of:

A. 4.9 m

B. 9.8 m

C. 19.4 m

D. 38.8 m

E. none of these​

Answer 1

Explanation:

Vi= 19.4 approximately =19.5

Vf= 0m/s

a= - 9.8 m/s^2

d=?

Since we have those informations. Use

Vf^2 = 2ad + vi^2

When it reaches the maximum height, it's final velocity is 0 m/s

(0m/s)^2 = 2(-9.8m/s^2) d + (19.5m/s)^2 - 380.25m^2 /s^2 = (-19.6m/s^2) d

d= 19.4m

Here is your answer

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