What is the kinetic energy of a 27 kg dog that is running at a speed of 8.3 m/s (about 19 mi/h
To calculate the kinetic energy (KE) of an object, you can use the formula:
KE = 1/2 * mass * velocity^2
where:
- KE represents the kinetic energy
- mass refers to the mass of the object
- velocity is the speed at which the object is moving
In this case, the mass of the dog is given as 27 kg, and its speed is 8.3 m/s.
Plugging these values into the formula, we get:
KE = 1/2 * 27 kg * (8.3 m/s)^2
To simplify the calculation, we can first square the velocity:
KE = 1/2 * 27 kg * 68.89 m^2/s^2
Next, multiply the mass and the squared velocity:
KE = 1377.15 kg m^2/s^2
Since the unit for kinetic energy is joules (J), we can rewrite the answer using the appropriate unit:
KE = 1377.15 J
So, the kinetic energy of the 27 kg dog, running at a speed of 8.3 m/s, is approximately 1377.15 joules.