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Tnguyen8160
26.04.2020 •
Mathematics
7. A westward-moving car slows down from 26.0 m/s to 10.0 m/s in 2.0 seconds. What is the magnitude
(i.e., value) and direction of the acceleration? Show work.
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Ответ:
Change in speed = (final speed) - (initial speed) = 10-26 = -16
Divide this over the change in time (2 seconds) to get -16/2 = -8
The negative indicates we're slowing down or that the velocity is decreasing.
The direction of the acceleration is opposite of the car's movement, so the direction of acceleration (or more accurately deceleration) is east.
In summary:
Magnitude = 8 m/s^2
direction = east
Ответ:
2.distance
3.salary