A runner has a speed of 5 m/s and a mass of 130 kg. What is his kinetic energy?A.1625 JB.3250 JC.325 JD.875 J
Question
A runner has a speed of 5 m/s and a mass of 130 kg. What is his kinetic energy?
A. 1625 J
B. 3250 J
C. 325 J
D. 875 J
Solution
The kinetic energy (KE) of an object can be calculated using the formula:
KE = 1/2 * m * v^2
where: m is the mass of the object (in kg) v is the speed of the object (in m/s)
Substituting the given values into the formula:
KE = 1/2 * 130 kg * (5 m/s)^2 KE = 1/2 * 130 kg * 25 m^2/s^2 KE = 1625 Joules
So, the correct answer is A.1625 J.
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