Please helpers! I wrote the first questions answer but from there i didnt know how to calculate.
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Answer:
3.
Force(f) =2000N
Distance (d) =10m
Time(t)=50 sec
We know,
P=W/t
=f×d/t
=2000×10/50
=400 watt
4.
Force(f) =30N
Distance (d) =10 m
Time(t) =5 sec
We know,
P=w/t
=f×d/t
=30×10/5
=60 watt