How can a driver steer a car traveling at constant speed so that the magnitude of the acceleration remains constant. (Assume that the road is level. Select all that apply.)

1. on a circular path
2. on a straight line
3. on a parabolic path
4. on an elliptical path

Explanation:

If the driver steer into circular path , the acceleration of car will be

acceleration = velocity²/radius  of circle

Because the velocity and radius of circle are both constant at all points . Thus the acceleration will also remain constant .

In case 3 and 4 , the radius of path changes . Because velocity is constant . Therefore the acceleration will not remain constant

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