Question

What is the average velocity between 3.00 and 6.00 seconds?

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

Answer :

(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 :

$V_{average}=\frac{\Delta d}{\Delta t}=\frac{d_{final}-d_{initial}}{t_{final}-t_{initial}}$

where,

d = displacement

t = time

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

$V_{average}=\frac{36m-9m}{6s-3s}=9m/s$

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.

$V_{average}=\frac{225m-144m}{15s-12s}=27m/s$

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