A boy walks first a disance of 0.5 km in 10 minutes , next 1 km in 20 minutes and last 1.5 km in 30 minutes . Is the motion uniform? Find the average speed of the boy in m/s
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Answer:
no, the motion is not uniform.
Step-by-step explanation:
0.5 km = 0.0005 m
10min= 600s
1km = 0.001m
20min= 1200s
1.5km= 0.0015m
30m = 1800s
avg speed = total distance travelled / total time taken
= 0.0005 + 0.001 + 0.00015 / 600 + 1200 + 1800
= 0.003 / 3000
= 0.000001m/s
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