4.When a particle moves in a uniform circular motion. It hasSelect answersARadial accelerationBTangential velocityCTangential accelerationDRadial velocity
Question
4. When a particle moves in a uniform circular motion. It has
Select answers:
- A Radial acceleration
- B Tangential velocity
- C Tangential acceleration
- D Radial velocity
Solution
When a particle moves in a uniform circular motion, it has:
A) Radial acceleration: This is also known as centripetal acceleration. It is the rate of change of tangential velocity and always points towards the center of the circle.
B) Tangential velocity: This is the velocity measured at any point tangent to the circle. It is perpendicular to the radial velocity and always points in the direction of motion.
C) Tangential acceleration: This is the rate of change of tangential velocity. In uniform circular motion, the speed of the particle is constant, so there is no tangential acceleration.
D) Radial velocity: This is the velocity towards or away from the center of the circle. In uniform circular motion, the particle is always moving perpendicular to the radial direction, so there is no radial velocity.
So, the correct answers are A) Radial acceleration and B) Tangential velocity.
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