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2 votes
a student pushes a 40-N block across the floor for a distance 0f 10 m how much work was done to move the block?

User Tamilan
by
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2 Answers

6 votes
We don't know how much force s/he had to use to push the block.
If the floor was smooth and wet, it needed very little force.
If there was sandpaper or stones on the floor, it took a lot of force.

Whatever amount of force s/he needed to use, the work done was

Work = (amount of force, in Newtons) x (10 m)

The unit is Joules.
User Kallayya Hiremath
by
7.7k points
5 votes
w=f*d
= 40N * 10m
work= 400 joules
User Chpn Dave
by
8.6k points

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