Given,
Mass of car (m)=1000kg
Speed of car (v)=25m/s
Friction force (F)=200N
Power developed (P)=?
Since, speed of car is constant. So, acceleration is zero, i.e a=0m/s2
Total force needed F=Fr+ma
=200+1000∗0=200N
∴ P=F∗v=200∗25=5000Watt
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