Please explain both the parts
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Step-by-step explanation:
Average speed = Total distance / Total time
(i) Between 4s and 5s,
Distance travelled = 20m
Time taken = 1s
Average speed = 20/1 = 20 m/s
(ii) Between 4s and 7s
Distance travelled = 20m
Time taken = 3s
Average speed = 20/3 = 6.67 m/s
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