Question

A man with mass 82 kg runs at a speed of 2.8 m/s. how much kinetic energy does he have?

a. 114.8 j
b. 221.8 j
c. 642.9 j
d. 321.4 j

Answer 1

The man has approximately 324.64 joules of kinetic energy.

Step-by-step explanation:

The kinetic energy of the man can be calculated using the formula:

KE = 0.5 * mass * velocity^2

Substituting the given values: KE = 0.5 * 82 kg * (2.8 m/s)^2 = 324.64 J

Therefore, the man has approximately 324.64 joules of kinetic energy.