In a system the initial kinetic energy is 20J and a work of 25J is done what is the final kinetic energy
The final kinetic energy of the system can be calculated using the equation:
Final kinetic energy = Initial kinetic energy + Work done
Final kinetic energy = 20J + 25J
Final kinetic energy = 45J
Therefore, the final kinetic energy of the system is 45J.
To find the final kinetic energy, we need to consider the work-energy principle, which states that the work done on an object is equal to the change in its kinetic energy.
In this case, if the initial kinetic energy is 20J and a work of 25J is done, we can use the equation:
Work done = Change in kinetic energy
Since the initial kinetic energy is 20J and the work done is 25J, we can write the equation as:
25J = Final kinetic energy - 20J
Now, let's rearrange the equation to solve for the final kinetic energy:
Final kinetic energy = 25J + 20J
Final kinetic energy = 45J
Therefore, the final kinetic energy in the system is 45J.