Answer:
4 m/s² or 4(m/s)/s
Explanation:
the equations of motion are
S= ut +½at²
v² = u²+ 2as
v = u + at
s = (u+v)/2 × t
From the parameters given
u = 0m/s this is because it starts from rest
Distance (s) = 18m
Time (t) = 3s
Based on this the first equation would be used
s = ut + ½at²
Input values
18 = 0×3 + ½ × a x 3²
18 = 0 + 9a/2
18 = 4.5a
Divide both sides by 4.5
a = 18 / 4.5 m/s²
a = 4 m/s² or 4(m/s)/s
I hope this was helpful, please mark as brainliest
