The initial velocity of a 4.0kg box is 11m/s due west. After the box slides 4.0m horizontally its speed is 1.5 m/s. Determine th e magnitude and the direction of the non conservative force acting on the box as it slides.
1 answer:
Answer:
The magnitude and direction of the non conservative force acting on the box is <F= 59.36 N - DUE EAST DIRECTION>.
Explanation:
m= 4 kg
Vi= 11 m/s
Vf= 1.5 m/s
d= 4m
d= Vi * t - a * t²/2
clearing a:
a= 2*(Vi * t - d)/ t²
Vf= Vi - a * t
replacing "a" and clearing t:
t= 2d/(Vf+Vi)
t= 0.64 s
found now the value of a:
a= Vi - Vf / t
a= 14.84 m/s ²
F= m * a
F= 59.36 N
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