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Nookie1986
[14]
2 years ago
6
how much force is needed to move a brick with a mass of 345-kg a distance of 28m while doing 1008 j of work?
Physics
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1
answer:
Travka
[436]
2 years ago
5
0
Work = (force) x (distance)
1,008 J = (force) x (28 m)
Divide each side by 28m : (1,008 kg-m²/sec²) / (28 m) = force
Force = 36 kg-m/s² =
36 Newtons
.
(about 8.1 pounds)
It doesn't matter what that force accomplishes.
It could be moving a brick, lifting a fish, or pushing a little red wagon.
In order to do 1,008 joules of work in 28 meters, it takes 36 N of force,
in the direction
of the 28 meters.
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