Thank you for registering.

One of our academic counsellors will contact you within 1 working day.

Please check your email for login details.
MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping

PFA question

PFA question

Question Image
Grade:7

2 Answers

Aziz Alam IIT Roorkee
askIITians Faculty 233 Points
7 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
7 years ago
Avg speed= total distance travelled/ total time elapsed
= (20+20)/8
=5m/s

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

Think You Can Provide A Better Answer ?

Provide a better Answer & Earn Cool Goodies See our forum point policy

ASK QUESTION

Get your questions answered by the expert for free