A mass m is released from a height 75 cm from the right-hand side of the track shown in the diagram at right.There is only friction acting on mass along the horizontal portion 30 cm either side of the midpoint O,with a kinetic coefficient of friction of k = 0.4.Determine how high it reaches the second time it passes over to the left side,and in which direction is it moving when it stops? 
Definitions:
Hypotenuse
The side opposite the right angle in a right-angled triangle, which is also its longest side.
Adjacent Side
In a right-angled triangle, the side that is next to the angle of interest and forms one side of that angle.
Opposite Side
Typically refers to the side that is diametrically opposed to a referenced side or point, often used in geometrical contexts or discussions of relative positions.
Cosine
In trigonometry, it is the ratio of the adjacent side of the angle and the hypotenuse.
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