2. Which of the following can sometimes be 'zero' for a moving body? (a) Average velocity (b) Distance travelled (c) Average speed (d) None of these
3. Which of the following is most likely not a case of uniform circular motion? (a) Motion of the earth around the sun (b) Motion of a toy train on a circular track (c) Motion of a racing car on a circular track (d) Motion of hours' hand on the dial of a clock
Answers
Answer:-
Which of the following can sometimes be 'zero' for a moving body?
(a) Average velocity
(b) Distance travelled
(c) Average speed
(d) None of these
Ans:- Average velocity can be zero .
As we know that average velocity is calculated by the total displacement divided by total time taken.As displacement is zero . So, average velocity can be zero .
Required option is (a) Average Velocity
3. Which of the following is most likely not a case of uniform circular motion?
(a) Motion of the earth around the sun
(b) Motion of a toy train on a circular track
(c) Motion of a racing car on a circular track
(d) Motion of hours' hand on the dial of a clock
Ans:- Motion of a toy train on a circular track & Motion of a racing car on a circular track are mostly likely not a case of uniform circular motion .
So, the required option (b) & (c) .
________________________
Question:-
Which of the following can sometimes be 'zero' for a moving body?
(a) Average velocity
(b) Distance travelled
(c) Average speed
(d) None of these
Answer:-
Option a Average Velocity
________________________
Question:-
Which of the following is most likely not a case of uniform circular motion?
(a) Motion of the earth around the sun .
(b) Motion of a toy train on a circular track .
(c) Motion of a racing car on a circular track.
(d) Motion of hours' hand on the dial of a clock.
Answer:-
(b) Motion of a toy train on a circular track .
(c) Motion of a racing car on a circular track.
Click on any of these two your answer will be correct.