The kinetic energy of a man of mass 90kg moving at a constant velocity is 2205j what is his velocity
Right now I do not know the answer
KE = 1/2 mv^2
So, plug in your numbers and solve for v.
To find the velocity of the man, we can use the formula for kinetic energy:
Kinetic Energy (KE) = 1/2 * mass * velocity^2
Given:
Mass (m) = 90 kg
Kinetic Energy (KE) = 2205 J
Substituting these values into the formula, we get:
2205 J = 1/2 * 90 kg * velocity^2
Simplifying:
2,205 J = 45 kg * velocity^2
Dividing both sides of the equation by 45 kg:
velocity^2 = 2,205 J / 45 kg
velocity^2 = 49 J/kg
Now, to find the velocity, we take the square root of both sides of the equation:
velocity = √(49 J/kg)
Calculating the square root:
velocity ≈ 7 m/s
Therefore, the velocity of the man is approximately 7 m/s.