Afactory employee spends two hours putting together - id3905869 от mem8163 25.03.2022 01:51

Question

Physics: Afactory employee spends two hours putting together a car part. a machine can do the same job in thirty minutes. which statement best describes the time-effectiveness of this scenario? the employee is four times as time-effective as the machine. the machine is half as time-effective as the employee. the employee is half as time-effective as the machine. the machine is four times as time-effective as the employee.

mem8163 · Accepted Answer

A velocity time graph shows the change of velocity of an object with respect ot time. If the slope of the graph is increasing in the postive region, it means that the velocity is changing, if the slope is decreasing, it means the the velocity is decreasing, but the object is moving in the same direction (positve direction).

If this slope intersects the graph at x-axis, it means that the body has 0 velocity and has become still. After that, if the line enters in the negative region, it means that its velocity is started to increases again, but the body is movinging in the opposite direction (negative direction)

Afactory employee spends two hours putting together a car part. a machine can do

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