Answer:
The acceleration of the object is [tex]4\ m/s^2[/tex] and it is negative acceleration.
Step-by-step explanation:
We are given with, an object is moving east, and its velocity changes from 65 m/s to 25 m/s in 10 second.
The rate at which velocity of an object is changing is called its acceleration.
Initial speed is 65 m/s and final speed is 25 m/s.
It is given by :
[tex]a=\dfrac{(25-65)\ m/s}{10\ s}\\\\a=-4\ m/s^2[/tex]
So, the acceleration of the object is [tex]4\ m/s^2[/tex] and it is negative acceleration.