Anonymous
Anonymous asked in Science & MathematicsPhysics · 1 decade ago

Force and velocity physics question?

If a car is travelling with a constant speed of 16 m/s in the Westward direction, what is the resultant force acting on it? Ignore friction.

They only give the speed.. how do I find the force??

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  • 1 decade ago
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    Force = mass x acceleration

    its a trick, since speed is constant acceleration = 0 and hence there is no force acting on it

  • 1 decade ago

    Force = mass* acceleration. Constant velocity means 0 acceleration. Therefore force = 0.

  • 1 decade ago

    Since , the speed ( velocity ) of the car is constant , its acceleration fould be zero . Now , if its acc, is zero then the Force resulting on it would also be zero as of Newton's 2nd Law , Force = Mass * Acceleration .

  • 1 decade ago

    Even if we are ignoring the friction (from road and bearing) slight air resistance will have to be considered. To compensate that slight force is to be applied. The air resistance depends upon size and shape of the car, wind velocity if therte is. If these things can be neglected, Newton's first law is applied here; every body continues its state of rest or of uniform motion unless it is compelled by an external force to change that state of rest or of uniform motion in a straight line

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  • 1 decade ago

    newton's second law: unbalanced forces cause acceleration.

    the car is traveling at a CONSTANT speed. It isn't accelerating. So the resultant force act on it is 0N

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