Answer:
3 m/s
Step-by-step explanation:
.....as the answer for your question is 3m/s ..
THANK YOU..
distance (rise) over time (run) gives speed, that is velocity
it can be found using the gradient (m) formula
m=(y2-y1)/(x2-x1)
m=(15-3)/(4-0) =12/4=3 m/s
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