Guest

PFA question

PFA question

Question Image
Grade:7

2 Answers

Aziz Alam IIT Roorkee
askIITians Faculty 232 Points
9 years ago
If you notice the net displacement is 0 but the distance covered is not zero.
Th particel moves to x=10 m and then after a halt moves to x=20m and then again comes back to original position.
Total Distance= 40 m
Time taken= 8 s

Hence the average speed= 5 m/s




-------------------------------------------------x------------------------------------------------
Ravi
askIITians Faculty 69 Points
9 years ago
Avg speed= total distance travelled/ total time elapsed
= (20+20)/8
=5m/s

...................................................................................................................................................
.................................................................................................................................................

Think You Can Provide A Better Answer ?

ASK QUESTION

Get your questions answered by the expert for free