Answer: The velocity of abject in a given time interval from 12 seconds to 15 sec is 27 m/s.
Explanation:
Displacement of the object after 12.00 seconds = 144 m
Displacement of the object after 15.00 seconds = 225 m
[tex]Velocity=\frac{\text{Change in Displacement}}{\text{Change in time}}[/tex]
[tex]Velocity=\frac{225 m-144 m}{15 s-12 s}=\frac{81 m}{3 s}=9m/s[/tex]
The velocity of abject in a given time interval from 12 seconds to 15 sec is 27 m/s.
