A man of mass 72kg is moving at a constant velocity. he has kinetic energy of 12961.calculatea his velocity.
K.E. = 1/2 * m * v^2
12961 = 1/2 * 72 * v^2
i need this answer of this question an athelete of mas 70kg runs at a velocity of 72kg per hour.. solve it now
To calculate the velocity of the man, we need to use the formula for kinetic energy:
Kinetic energy (KE) = 1/2 * mass * velocity^2
Given that the man's mass is 72 kg and his kinetic energy is 12,961 J, we can rearrange the formula to solve for velocity:
Velocity^2 = (2 * KE) / mass
Plugging in the given values:
Velocity^2 = (2 * 12961 J) / 72 kg
Simplifying the equation:
Velocity^2 = 359.014 J/kg
To find the velocity, we take the square root of both sides:
Velocity = √(359.014 J/kg)
Calculating the square root:
Velocity ≈ 18.95 m/s
Therefore, the velocity of the man is approximately 18.95 m/s.