The negative work done states that the work is done by the object and not on the object.
<u>Explanation:
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According to work energy theorem, the work done is equal to change in kinetic energy exhibited by the body. As the mass of the object is constant, and the velocity is decreased from 10 m/s to 4 m/s, the work done will be
![W=\frac{1}{2} \times\left(u^{2}-v^{2}\right)](https://tex.z-dn.net/?f=W%3D%5Cfrac%7B1%7D%7B2%7D%20%5Ctimes%5Cleft%28u%5E%7B2%7D-v%5E%7B2%7D%5Cright%29)
Here W is the work done, m is the mass and v is the final and u is the initial velocity of the object. As the initial velocity is greater than the final velocity. So
![W=\frac{1}{2} \times\left(4^{2}-10^{2}\right)=\frac{1}{2} \times(16-100)=\frac{1}{2} \times(-84)= - 42 J](https://tex.z-dn.net/?f=W%3D%5Cfrac%7B1%7D%7B2%7D%20%5Ctimes%5Cleft%284%5E%7B2%7D-10%5E%7B2%7D%5Cright%29%3D%5Cfrac%7B1%7D%7B2%7D%20%5Ctimes%2816-100%29%3D%5Cfrac%7B1%7D%7B2%7D%20%5Ctimes%28-84%29%3D%20-%2042%20J)
So the work done is negative for the given situation. The negative work done states that the work is done by the object and not on the object.
I believe its B. it contains only the colors of the rainbow and TV waves
Hope it helped
The needle has buoyancy and that means it won't sink. It also has a lot to do with the weight of the needle which is very little. The less weight there is the easier it will be to float.
There is 0 acceleration because the pony is moving at a constant velocity
B. 500ft. If you are driving at night with high beams on you must dim them within 500 feet of an oncoming vehicle.