a body starts moving from rest and acquire a speed of 4m/s in 20 sec.

1.	a body starts moving from rest and acquire a speed of 4m/s in 20 sec. find its average acceleration.
Answer» ANSWER: First the INITIAL Velocity ( u ) is 0m/s And FINAL Velocity ( v ) is 4 m/s Time TAKEN is 20 seconds To find its average acceleration - FORMULA is FINAL VELOCITY - INITIAL VELOCITY DIVIDED BY TIME TAKEN $4 - 0 \div 20$ 4-0/20 =4/20 =5 so average acceleration is 5m/s

a body starts moving from rest and acquire a speed of 4m/s in 20 sec. find its average acceleration.

Answer»

First the INITIAL Velocity ( u ) is 0m/s

And FINAL Velocity ( v ) is 4 m/s

Time TAKEN is 20 seconds

To find its average acceleration -

FORMULA is FINAL VELOCITY - INITIAL VELOCITY DIVIDED BY TIME TAKEN

$4 - 0 \div 20$

4-0/20

=4/20

so average acceleration is 5m/s