Does total net Work done = the total change in Mechanical Energy?
W=ΔKE=1/2(mv^2f)-1/2(mv^2i)
>mfw people can't do basic high school physics
>>7646402
>what is conservation of energy
>>7646402
Mechanical energy never changes. It is a constant for the system (assuming no outside influence). If KE = PE, then ∆KE = ∆PE. They change by the same amount, but we are interested in the effect the force has on the object. Therefore, we measure it in terms of KE.
>>7648755
>Mechanical energy never changes.
Yes it does all the time.
Only in isolated systems it doesn't.
>>7646402
You're question is to vague, might be true in some situations but generally no. Work has a definition you know.
>>7646402
Not in relativity.
>>7646402
No, work done by all nonconservative forces present in the system is equal to the change in mechanical energy
>>7648760
>Assuming no outside influence.
This implies an isolated system.
>>7646402
Go read your textbook
>>7648864
Ok sir
