physical
posted by Anonymous .
How much more work is done to push a box 2.5 m with a force of 30 N than to push a box 2.0 m with a force of 26 N?

W =F•s•cosα
α=0, cosα =1.
W1W2 =F1•s1 – F2•s2=30•2.5  26•2=
= 75 52 = 23 J.
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