a 40 kg runner is running at a speed of 3 m/s. how much kinetic energy does the runner have? remember…

a 40 kg runner is running at a speed of 3 m/s. how much kinetic energy does the runner have? remember : $e_{k}=\frac{1}{2}mv^{2}$ $e_{k}=? j$

a 40 kg runner is running at a speed of 3 m/s. how much kinetic energy does the runner have? remember : $e_{k}=\frac{1}{2}mv^{2}$ $e_{k}=? j$

Answer

Explanation:

Step1: Identify values

$m = 40$ kg, $v = 3$ m/s

Step2: Substitute into formula

$E_{K}=\frac{1}{2}mv^{2}=\frac{1}{2}\times40\times3^{2}$

Step3: Calculate result

$\frac{1}{2}\times40\times9 = 180$ J

Answer:

180 J