3) A carriage moves 30 km in one hour. Calculate its speed in m/s. Is it average or uniform speed?
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speed is 30 km h-1
= 30 ×5/18 ms-1
= 25 / 3 m s-1
oxoTUSHARoxo:
Distance= 30 km = 30×100 m= 3000 m
Time = 1 hour = 3600 sec.
Speed = distance÷ time
30000 ÷ 3600
Speed = 8.33
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