a) An object moves 18 m in the first
3,22 m in the next 3 s and 14 m in
the last 3 s. What is its average
speed?
(Ans: 6 m/s)
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Explanation:
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s1=18m
t1=3s
s2=22m
t2=3s
s3=14m
t3=3s
Average speed= Total distance/Total time
=>(s1+s2+s3)/(t1+t2+t3)
=>(18+22+14)/(3+3+3)
=>54/9
=>6m/s
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