What is the kinetic energy of a 15 g snowball moving through the air at 3.5 m/s?

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Answer 1 · 2018-04-22T15:20:31

$0.091875 J$ $0.091875 J$

$m a s s = 15 g = \frac{15}{1000} k g = 0.015 k g$ $mass=15g=15/1000kg=0.015kg$
$v e l o c i t y = 3.5 \frac{m}{s}$ $velocity=3.5m/s$

applying the formula,

$K E = \frac{1}{2} m v^{2}$ $KE=1/2mv^2$

$= \frac{1}{2} (0.015) {(3.5)}^{2}$ $=1/2(0.015)(3.5)^2$

$= \frac{1}{2} (0.015) (12.25)$ $=1/2(0.015)(12.25)$

$= \frac{1}{2} (0.18375)$ $=1/2(0.18375)$

$= 0.091875 Joules$ $=0.091875 "Joules"$

$K E = 0.091875 J$ $KE=0.091875J$