f. 8 second and 18 hours.
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Answer:
18.0022222 hours
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Class 11
>>Physics
>>Motion in a Straight Line
>>Speed and Velocity
>>An object moves 18 m in the first 3 seco
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An object moves 18m in the first 3 seconds and 22 m in the next 3 seconds while it travels 14m in the last 3 seconds. Calculate average speed in m/s.
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Correct option is A)
Given: First 3 seconds: S
1
=18 m
Second 3 seconds: S
2
=22 m
Third 3 seconds: S
3
=14 m
Average speed =
9
S
1
+S
2
+S
3
=
9
18+22+14
=6 m/s
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