XxJadexX6527
20.07.2019 •
Physics
The initial velocity of a 4.0-kg box is 11 m/s, due west. after the box slides 4.0 m horizontally, its speed is 1.5 m/s. determine the magnitude and the direction of the non-conservative force acting on the box as it slides.
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Ответ:
F = - 59.375 N
Explanation:
GIVEN DATA:
Initial velocity = 11 m/s
final velocity = 1.5 m/s
let force be F
work done = mass* F = 4*F
we know that
Change in kinetic energy = work done
kinetic energy =
kinetic energy = = -237.5 kg m/s2
-237.5 = 4*F
F = - 59.375 N
Ответ:
energy
Explanation: