unit4mathass.docx - PHY 1001 Unit Four Energy Mathematical...

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PHY 1001 Unit Four – Energy Mathematical Assignment 1. A force of 100 N pushing a 10 kg box over level ground does 300 J of work on the box. Through what distance was the force applied? Key Idea Stock of Data and Force- something that causes a j = 300 n = 100 Change in motion for an object Solution 300 J/ 100 N = x 3 m 2. A force of 100 N is used to raise a 10.0kg box from rest on the ground to rest on a nearby shelf 2.00 m above the ground. How much work was done in raising the box? Key Idea Stock of Data and Work- measure of energy transfer that occurs when an object is moved over a distance by an external force at least part of which is applied in the direction of the displacement. Work done= force x displacement = F*d F=100n d=2m Solution – 100*2=200J
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3. A force of 100 N is applied in pushing a stalled automobile at constant speed for a distance of 150 m. How much work (in J) was done on the car by the force? Key Idea Stock of Data and Work- measure of energy transfer that occurs when an object is moved over a
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