A bus travels 81 km in 90 min. The speed of the
bus is
a. 15 m/s
b. 0.9 m/s
c. 1.5 m/s
O d. 8.1 m/s
Clear my choice
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Answer:
speed = distance / time
( 81km = 81000 m / 90 min = 5400 sec)
speed = 81000 / 5400
speed = 15 m/ s
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