a boy of mass 100kg moves with a velocity 8m/s calculate its kinetic energy
(1/2)(100)(64) Joules
To calculate the kinetic energy of the boy, you can use the formula:
Kinetic Energy = 1/2 * mass * velocity^2
Here, the mass of the boy is given as 100 kg, and the velocity is given as 8 m/s. Plugging these values into the formula, we get:
Kinetic Energy = 1/2 * 100 kg * (8 m/s)^2
= 1/2 * 100 kg * 64 m^2/s^2
= 0.5 * 100 kg * 64 m^2/s^2
= 3200 kg * m^2/s^2
Therefore, the kinetic energy of the boy is 3200 Joules (J).
To calculate the kinetic energy of a moving object, you can use the formula:
Kinetic Energy = (1/2) * mass * velocity^2
Given:
Mass (m) = 100 kg
Velocity (v) = 8 m/s
Now, let's substitute these values into the formula:
Kinetic Energy = (1/2) * 100 kg * (8 m/s)^2
= (1/2) * 100 kg * 64 m^2/s^2
To simplify the calculation, first multiply the mass and velocity squared:
Kinetic Energy = 0.5 * 100 kg * 64 m^2/s^2
= 3200 kg * m^2/s^2
The unit for kinetic energy is joules (J). Therefore, in this case, the object has a kinetic energy of 3200 joules (J).