Which of the following situations is true and possible?a. If the velocity of a body is zero, then the acceleration can be non-zerob. A body moving at a constant velocity can have accelerationc. The magnitude of distance and displacement are equal in a circular motiond. All of the above
Question
Which of the following situations is true and possible?a. If the velocity of a body is zero, then the acceleration can be non-zerob. A body moving at a constant velocity can have accelerationc. The magnitude of distance and displacement are equal in a circular motiond. All of the above
Solution
The correct answer is a. If the velocity of a body is zero, then the acceleration can be non-zero. This is possible in a situation where a body is at the peak of its motion. For instance, when you throw a ball straight up, at the highest point, the velocity is zero but it is still under acceleration due to gravity.
Option b is incorrect because acceleration is a change in velocity. If velocity is constant, then there is no change, and therefore no acceleration.
Option c is also incorrect because in circular motion, the distance is the entire path travelled along the circle, while displacement is the shortest distance from the start to the end point, which is not equal in a circular path.
Therefore, option d is also incorrect as it states that all of the above are true.
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