Exam-style question
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If a car is moving in a circular path at a constant speed, what can be said about the net force acting on the car?.
- A.The net force is zero.
- B.The net force is directed towards the center of the circle.
- C.The net force is directed away from the center of the circle.
- D.The net force is equal to the weight of the car.
Model answer
What a good answer should say
- The net force is directed towards the center of the circle.
Explanation
Why this works
In uniform circular motion, the net force acting on the object is the centripetal force, which is always directed towards the center of the circular path, ensuring the object continues to move in a circle.
Common mistake
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