Answer: a= .41 m/s²
Step-by-step explanation:
Given:
initial velocity (V₀): 30 m/s
final velocity(Vₓ): 18 m/s
total distance (ΔS): 320m
Need:
Acceleration (a): ?m/s²
to solve this you need to use the kinematics formula:
(Vₓ)² = (V₀)² +2*a*ΔS
Plug in the numbers and solve algebraically for a

Round to sigfigs
a= .41 m/s²