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3. What is the work done to increase the velocity of a car from rest to 80 km/h if the weight of the car is 200N? |
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Answer» W=F×D = 200 × d v^2=u^2+2gs s=v^2-u^2/2g Putting values by converting 80 km/ h to m/s s=(22.22)^2 - 0 /2 ×10= 24.7 m Putting values in W w= 200×24.7 =4940 J(APPROX |
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