Answer:
[tex]+1 m/s^2[/tex]
Explanation:
Acceleration is given by
[tex]a=\frac{\Delta v}{\Delta t}[/tex]
where
[tex]\Delta v[/tex] is the change in velocity
[tex]\Delta t[/tex] is the time interval in which the change in velocity occurs
To find the acceleration at 1 second, we can take the data at t = 1 s and t = 2. We find:
[tex]\Delta t = -3 -(-4) = 1 s[/tex]
[tex]\Delta v = 2 - (1) = +1 m/s[/tex]
So, the acceleration is
[tex]a=\frac{+1}{1}=+1 m/s^2[/tex]