Calculate the work done in driving a post into the earth if a force of 17 kN is exerted over a distance of 3.2 cm .
| Data statements | F = 17 x 103 N x = 3.2 x 10-2 m |
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| Formula | Ework = F x | |
| Transposition | (not needed) | |
| Substitution | Ework = 17 x 103 N x 3.2 x 10-2 m | |
| Evaluation | Ework = 5.4 x 102 J | 544 has to be reduced to 2 SF. |