Question

what is the kinetic energy of a ball with a mass of 0.5 kg and a velocity of 10 m/s? (formula: $ke=\frac{1}{2}mv^{2}$)

Explanation:

Step1: Identify values

$m = 0.5\ kg$, $v=10\ m/s$

Step2: Apply kinetic - energy formula

$KE=\frac{1}{2}mv^{2}=\frac{1}{2}\times0.5\times(10)^{2}$
$=\frac{1}{2}\times0.5\times100$
$ = 25\ J$

Answer:

25 J