I thinks it’s 2...........
I’m not good with physics but I’m good with the theory what goes up must come down
the rate of work done or doing work is usually measured by the power of a machine .
Answer:
a = Δv/t = (vf - vi)/t = (0 - 5)/4 = -1.25 m/s²
Explanation:
You may or may not need the negative sign, depending on how the question designer was thinking about the problem.