Tension T Tension T 4 Locate the points where other objects touch the object of interest. Here the rope and the ground touch the skier. O Identify the object of interest. Here the object is the skier. 2 Draw a picture Name and label each contact of the situation. force. The rope exerts a tension force, and the ground exerts both a normal and a kinetic Nor mal force A Kinetic frichan f 3 Draw a closed -Normal force t curve around Weight it friction force. Weight w Kinetic friction 7 the object. 6 Name and label long-range forces. Weight is the only one.

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Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!