A student ran the 100-m dash in 15.4 s. What was the student’s speed in miles per hour?
2 answers:
Answer:
Speed of the student was 14.51 miles per hour.
Step-by-step explanation:
A student ran the dash = 100 m
Since 1 meter = 0.000621 miles
Therefore, 100 meter = 100× 0.000621
= 0.0621 miles
He ran the dash in 15.4 seconds
∵ 3600 seconds = 1 hour
∴1 second = hour
∴ 15.4 seconds = hour
= 0.00428 hours
Now we know the formula to calculate the speed
Speed =
= miles per hour
= 14.51 miles per hour
Speed of the student was 14.51 miles per hour.
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