Answer:
3 units
Step-by-step explanation:
There are 3 squares between them.
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c
12
3 + x>-9 x=12 15>-9
∡x = v0t + 1/2 at²
∡x / v0t = 1/2 at²
2∡x / v0t =at²
a = 2∡x / v0t³
that's your answer:)