Question

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

Explanation:

Step1: Identify values

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

Step2: Substitute into formula

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

Step3: Calculate

$\frac{1}{2}\times0.5\times100 = 25$ J

Answer:

A. 25 J