Acar rounds a curve while maintaining a constant speed. is there a net force on the car as it rounds the curve?
1. it depends on the sharpness of the curve and speed of the car.
2. no – its speed is constant.
3. yes – its direction is changing.
4. no – its acceleration is zero.
5. no – there is an equal and opposite reaction from the pavement. 6. yes – all moving objects have a force on them.

Yes – its direction is changing.

Explanation:

It is given that, a car rounds a curve while maintaining a constant speed. We know that on a circular curve, the object moves with constant speed. The velocity of object keeps on changing due to change in its direction. Here, the forces acting on the car are force of gravity and the centripetal force.

We can say that yes there is a net force on the car as it rounds the curve due to the change in its direction of motion. Hence, the correct option is (3).

If a car rounds a curve while maintaining a constant speed, there exist a net force on the car as it rounds the curve, which also changes its direction.

A centripetal force can be defined as a net force that causes a physical body to experience a uniform circular motion or follow a curved path.

This ultimately implies that, a centripetal force is a net force that causes a change in the direction of velocity towards the axis of rotation or center of curvature of a uniform circular motion.

Since the car maintained a constant speed, there would be a net force acting on the car as it rounds the curve and a subsequent change in its direction.

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