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I need help on this
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I need help on this

I need help on this-example-1
User Jorgehumberto
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1 Answer

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speed (or velocity) = distance / time

distance (or displacement) = 30.0 – 10.0
= 20.0 m

time = 160.0 – 80.0 = 80.0 s

average velocity = 20.0 / 80.0 = 0.25 m/s

but because the line has a negative gradient the answer is -0.25 m/s which is B

User Zbr
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