Answer:
[tex]-4\frac{m}{s^2}[/tex]
Explanation:
The object changes its speed over some time, this means that there is an acceleration.
It has a uniformly accelerated movement.
The Formula for finding speed in a uniformly accelerated motion is
[tex]a=\frac{V_{f}-V_{o}}{t}[/tex]
[tex]V_{o}= 65\frac{m}{s}\\V_{f}= 25\frac{m}{s} \\t= 10s[/tex]
Replace
[tex]a=\frac{(25-65)\frac{m}{s} }{10 s}\\ a=\frac{-40\frac{m}{s} }{10s}\\a= -4\frac{m}{s^2}[/tex]
Acceleration gives us a negative value this means that it is slowing.
