term9ayelly term9ayelly

24-11-2016
Physics

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Jen pushed a box for a distance of 80m with 20 N of force. How much work did she do?
1,600 J
60 J
.25 J
150 J

Respuesta :

JcAlmighty JcAlmighty

27-11-2016

The answer is 1,600 J.

A work (W) can be expressed as a product of a force (F) and a distance (d):
W = F · d

We have:
W = ?
F = 20 N = 20 kg*m/s²
d = 80 m
_____
W = 20 kg*m/s² * 80 m
W = 20 * 80 kg*m/s² * m
W = 1600 kg*m²/s²
W = 1600 J

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