The initial velocity of the particle is 10 m / s, and it becomes 2 m / s after 4 s,

The initial velocity of the particle is 10 m / s, and it becomes 2 m / s after 4 s,

Hello!
a=△v/△t
=2m/s-10m/s / 4s
=-2m/s²
A: the acceleration is - 2m / s and 178
I hope my answer will help you