A mass slides from rest down a 45 degree incline that has a coefficient of kinetic friction equal to 0.2. What is the speed of the mass after it has slid for a total of 2 meters?

The speed of the mass after it has slid for a total of 2 meters is 4.71 m/s.

Explanation:

The speed of the mass can be found using Newton second law:

Where Pₓ is the weight force in the horizontal direction and is the friction force.  

Now, we can find the speed of the mass using the following kinematic equation:

Therefore, the speed of the mass after it has slid for a total of 2 meters is 4.71 m/s.

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d) the number of neutrons plus the number of protons

you have to draw the persons position over there