kaynutAirastbt kaynutAirastbt
  • 25-11-2016
  • Physics
contestada

4. You exert 375 J to move a 45-kg object 5 m. How much force is required? (Points : 3)
1,875 N
75 N
420 N
225 N

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MissPhiladelphia
MissPhiladelphia MissPhiladelphia
  • 26-11-2016
In physics, a force is said to do work if, when acting, there is a displacement of the point of application in the direction of the force. It is calculated by the formula W = f x d. Therefore, we calculate the problem above as follows:

W = f x d
375 = f x 5
f = 75 N <------SECOND OPTION
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