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lisov135 [29]
3 years ago
7

Elana runs for 28 seconds and finishes at 250 meters .what is her velocity

Mathematics
1 answer:
Sophie [7]3 years ago
3 0

Answer:

8.9m/s

Step-by-step explanation:

Time= 28s

Displacement= 250m

Velocity=?

Velocity (v) = displacement (d)/ Time (t)

V= 250/28

V=8.9m/s

OR YOU CAN APPROXIMATE IT

V=8.928

YOU CAN APPROXIMATE IT TO

V=8.93m/s

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2 years ago
An unknown radioactive element decays into non-radioactive substances. In 180 days the radioactivity of a sample decreases by 73
BigorU [14]

Answer:

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__

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