Respuesta :

We are given the following conditions:
[tex]v_{0} = 28m/s t = 4s v_{f} = 0m/s[/tex]

Since we are told it slows down at a constant rate, we know we are dealing with uniformed accelerated motion, or UAM for short.

So we look at our kinematics equation that contains the given variables.

[tex]v_f = v_0 + at[/tex]

This contains our target variable and our initial conditions. Plug and chug, we get:

[tex](0m/s) = (28m/s) + a(4s) -28m/s = (4s)*a a = -7m/s^2[/tex]

Thus the answer is:

a = -7m/s^2

Hope this helps!


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