PHYSICS MIDDLE SCHOOL

Q1. In a 100m track event, the time taken by four runners is 10 sec., 10.2 sec., 10.4 sec and 10.6 sec. Find the ratio of their speed.

Answers

Answer 1
Answer: distance (s)=100m
time
T₁=10
T₂=10.2
T₃=10.4
T₄=10.6
by v=(s)/(t)
we get
V₁=(100)/(10)
V₁=10m/s

V₂=(100)/(10.2)
V₂=9.8m/s

V₃=(100)/(10.4)
V₃=9.61 m/s

V₄=(100)/(10.6)
V₄=9.43 m/s

V₁:V₂:V₃:V₄ = 10 : 9.8 : 9.61 : 9.43

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