Short type Questions
Answer all the questions please
Answers
Answer:
1. A displacement is the shortest distance travelled.and the initial and final position is same in this case
2.Uniform circular motion
3.Yes
4.Yes in uniform circular motion
Answer:
b--
Average velocity: The average velocity of a body is defined as the total displacement of a body divided by the total time taken. By looking at both the formulae we can say that the magnitude of average velocity and average speed will be equal, when the total distance is equal to total dįşplāçęmęŋţ
ç--
Speed is the distance travelled in the given time. Distance can never be zero. Therefore, average speed will always be a positive value and will not be zero. Speed is a scalar quantity and has only magnitude.
d---
Yes, average velocity of a moving body can be zero. Average velocity is displacement by time. So for example, if you are travelling in a circle, and come back to your initial point, displacement is zero
