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Distance d = 450 m
Time t = 2 min = 120 sec
Now, speed v = distance/time
So, v = d/t
So, v = 450/120 m/s
So, v = 45/12 m/s
So, v = 15/4 m/s
So, v = 3.75 m/s
Now,
1 km/h = (1000m)÷(3600sec)
So, 1 km/h = (1000/18) m/s
So, 1 km/h = 5/18 m/s
So, 1 m/s = 18/5 km/h
Now, v = 15/4 m/s
So, v = (15/4) × (18/5) km/h
So, v = 27/2 km/h
Thus v = 13.5 km/h
Thus, speed is 3.75 m/s or 13.5 km/h
Time t = 2 min = 120 sec
Now, speed v = distance/time
So, v = d/t
So, v = 450/120 m/s
So, v = 45/12 m/s
So, v = 15/4 m/s
So, v = 3.75 m/s
Now,
1 km/h = (1000m)÷(3600sec)
So, 1 km/h = (1000/18) m/s
So, 1 km/h = 5/18 m/s
So, 1 m/s = 18/5 km/h
Now, v = 15/4 m/s
So, v = (15/4) × (18/5) km/h
So, v = 27/2 km/h
Thus v = 13.5 km/h
Thus, speed is 3.75 m/s or 13.5 km/h
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