Question

What is the average velocity between 3.00 and 6.00 seconds?

0.111 m/s, east
4.50 m/s, east
22.5 m/s, east
9.00 m/s, east
What is the average velocity between 12.00 and 15.00 seconds?

81.0 m/s, east
27.00 m/s, east
9.00 m/s, east
0.0123 m/s, east
(both go with the pic)

Answer 1

1)
average velocity:
(3,9)
(6,36)
average velocity=(36-9)m/(6-3) s=27m/3s=9 m/s

Answer: 9 m/s, east.

2)
(12, 144)
(15,225)
average velocity=(225-144)m/(15-12)s=81 m/3s=27 m/s

Answer: 27 m/s,east.

Answer 2

(1) The correct option is, 9.00 m/s, east

(2) The correct option is, 27.00 m/s, east

Explanation :

Average velocity : It is defined as the change in the displacement with respect to the change in time.

Formula used :

`V_(average)=(\Delta d)/(\Delta t)=(d_(final)-d_(initial))/(t_(final)-t_(initial))`

where,

d = displacement

t = time

(1) Now we have to calculate the average velocity between 3.00 and 6.00 seconds.

`V_(average)=(36m-9m)/(6s-3s)=9m/s`

The average velocity between 3.00 and 6.00 seconds is, 9 m/s, east

(2) Now we have to calculate the average velocity between 12.00 and 15.00 seconds.

`V_(average)=(225m-144m)/(15s-12s)=27m/s`

The average velocity between 12.00 and 15.00 seconds is, 27 m/s, east

Therefore, (1) The correct option is, 9.00 m/s, east

(2) The correct option is, 27.00 m/s, east