The speed of a train is 80 km/h. If its speed is decreased to 50 km/hr. Find the percentage decrease
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Step-by-step explanation:
Initial speed u=80 km/h=80×
18
5
=22.22 m/s
Final speed v=60 km/h=60×
18
5
=16.67 m/s
Using v=u+at
Or 16.67=22.22+α×5
⟹ a=−1.1 m/s
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