1.

A loaded grocery cart is rolling across a parking lot in a strong wind. You apply a constant force vecF=(30N)hati-(40N)hatj to the cart as it undergoes a displacement vecs=(9.0m)hati-(3.0m)hatj. How much work does the forces you apply do on the grocery cart ?

Answer»

`150 J`
`390 J`
`-150 J`
`270 J`

SOLUTION :Work= `vecF.vecS=(30xx9)+(40xx3)=390J"""]"`


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