fanyattehedzg

2022-01-10

Excellent human jumpers can leap straight up to a height of 110 cm off the ground. To reach this height, with what speed would a person need to leave the ground?

Stella Calderon

Beginner2022-01-11Added 35 answers

At maximum height 110\ cm the speed of the jumper will be zero

Consider the kinematic equation,

${v}_{f}^{2}={v}_{0}^{2}+2ah$

$={v}_{0}^{2}-2gh$

$v}_{0}=\sqrt{2gh$ (1)

Substitute the values in equation to find the initial velocity.

$u=\sqrt{2\left(9.8\text{}\frac{m}{{s}^{2}}\right)(110\times {10}^{-2})}$

$=4.64\text{}\frac{m}{s}$

Consider the kinematic equation,

Substitute the values in equation to find the initial velocity.

22+64

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