Work And Energy?, "This Is The Problem I Dont Know How To Get The Answers?"

Work and energy?
This is the problem i dont know how to get the answers?

Answer:

1.213.5 N-m or J

2.2.08m

3.0.40 N

4.0.40 Nm or 0.40 J

Explanation:

1. Work=Force x Distance

Work= 30.5N x 7m = 213.5 N-m or J

2. Joules = Newton-meter

Distance = work / force

distance = 25 N-m /12m = 2.08m

3. Force = Work / Distance

Force = 10Nm/25m =0.40 N

4. 100cm=1meter

20cm x (1m÷100cm)= 0.20m

work= force x distance

work = 2N x 0.20m = 0.40 Nm or 0.40 J


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