find the average speed of train travelling 144 km in 2h.express the ans in m/s.[Ans:20m/s]
Answers
Answered by
16
Answer:
yes answer is 20m/s
Explanation:
distance travelled:144 km
in meters: 1 km =1000 m
144km= 144000m
time taken =2 h
in seconds=1 hour =3600
2 hours= 3600x2=7200
avg speed: distance/time
144000/7200
do division
the answer will be in m/s coz it is already converted
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Answered by
1
Answer : 1 km = 1000 m
therefore , 144km = 144000m
time taken = 2 h
1 hour =3600
thus , 2 hours= 3600x2=7200
average speed: distance/time
144000/7200 = 20m/s
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