Question

What is the average velocity between 12.00 and 15.00 seconds?

A) 81.0 m/s, east

B)

27.00 m/s, east

C)9.00 m/s, east
D) 0.0123 m/s, east

Answer 1

Subtract d(15) - d(12), then divide that by 3 because 3 sec between 12-15:
(225-144)/3 = 81/3 = 27m/s
B) 27.00 m/s, east

Answer 2

Answer: The velocity of abject in a given time interval from 12 seconds to 15 sec is 27 m/s.

Step-by-step explanation:

Displacement of the object after 12.00 seconds = 144 m

Displacement of the object after 15.00 seconds = 225 m

`Velocity=\frac{\text{Change in Displacement}}{\text{Change in time}}`

`Velocity=(225 m-144 m)/(15 s-12 s)=(81 m)/(3 s)=9m/s`

The velocity of abject in a given time interval from 12 seconds to 15 sec is 27 m/s.