A car moves at a constant speed of on a circular path of radius . What is its acceleration?
Answer and explanation
Correct answer: C. , directed toward the center
- Step 1: In uniform circular motion . Step 2. The acceleration is centripetal, pointing toward the center. **Answer: m/s² toward the center. Why not the others:** the direction changes, so there is an acceleration, and it is not along the velocity.
Practise more Mouvement, énergie et ondes.
Free questions with an explanation for every one, and full timed French Baccalaureat mock tests.
More Mouvement, énergie et ondes questions
- According to Newton's second law, what is the relationship between the net force on an object of mass and its acceleration…
- An object falls freely near the Earth's surface with no friction. What is its acceleration, to one decimal place?
- A net force of acts on a body of mass . What is its acceleration?
- What is the kinetic energy of a car of mass moving at ?
- A object descends by . Taking , what is the work done by its weight?
- A wave has a frequency of . What is its period?