Question 231035
st=d
15s=100
s=100/15
=20/3 m/sec
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2km/h
=2000/60^2
=2000/3600
=20/36
=5/9 m/sec
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20/3 + 5/9
=60/9 + 5/9
=65/9 m/sec new speed.
.
65t/9=100
t=900/65=180/13 sec
=13.85 sec
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Ed
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