A bus is moving with a constant velocity of 60 km/hr. calculate the distance travelled by the bus in 15 seconds and next 20 seconds.
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Answer:
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45km
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A bus is moving with a constant velocity of 60 km/h. What is the distance travelled by the bus in 15 seconds?
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Given:
Velocity = v = 60 km/h
Time = t = 15 sec
To find :
Distance = S = ?
First you have to convert velocity in meter/sec from km/h we can do this as following:
60 km= 60 * 1000 (as one km is equal to 1000 meters)
1 hr = 1 * 60 * 60 ( as one hour is equal to 60 min and 1 min is equal to 60 sec)
v = 60*1000/60*60
v = 16.666 m/sec
Now from definition of velocity:
v = S/t or S = vt
Put above values
S = 16.666 m/sec * 15 sec
S = 250 meters or 250/1000 = 0.25 km
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