Question

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?

Answer 1

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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