9. A front wheel drive car is travelling at constant velocity. Q is the force of the air on the moving car. P is the total upward force on both front wheels.
(a) State the values of forces P and Q *
(b) Calculate the mass of the car.
(c) The 400 N driving force to the left is suddenly doubled.
(i) Calculate the resultant forward driving force.
(ii) Calculate the acceleration of the car.
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Answer:
W=10000N
mg=10000
m=1000kg g=10m/sq sec
c) net force on left = 400N
acceleration= 400/mass= 0.4m/ sq sec
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