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Sagot :
Answer:
His velocity is -0.85m/s
Explanation:
Velocity is defined as the change in position divided by the time required for that change:
[tex]V=\frac{x_{2}-x_{1}}{t}[/tex]
In this case:
[tex]V=\frac{-46m-(-12m)}{40s}=-0.85m/s[/tex]
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