Q5.9Multiple choice
A car of mass m starts from rest and acquires a velocity along east v = v ˆi ( v > 0 ) in two seconds. Assuming the car moves with uniform acceleration, the force exerted on the car is
- (a)eastward and is exerted by the car engine.
- (b)eastward and is due to the friction on the tyres exerted by the road.
- (c)more than eastward exerted due to the engine and overcomes the friction of the road.
- (d)exerted by the engine .