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PtichkaEL [24]
2 years ago
15

Calculate the work done by a 4.2 N force pushing a 450. g sandwich across a table 0.8 m wide.

Physics
1 answer:
gladu [14]2 years ago
3 0

Answer:

3.36 Joules

Explanation:

Work done= Force × distance

F=4.2 N

distance= 0.8 m

work done= 4.2 × 0.8

work done= 3.36 Joules

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           Δp = mv_f - m v₀

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            m = 1 153.23

            m 153.23 kg

           

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            Δp = - 153.23 66

            Δp = - 10113.2 Kg m / s

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             I = f t = Δp

             F t = Δp

               

              F = Δp / t

              F = \frac{10113.2}{1.2 \ 60}

              F = 140.46 N

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