A particle moving in a straight line covers half the
distance with speed of 10 m/s. The other half of
the distance is covered in two equal time intervals
with speed of 4.5 m/s and 7.5 m/s respectively.
The average speed of the particle during this
motion is :
(1) 8.0 m/s
(2) 12.0 m/s
(3) 10.0 m/s
(4) 7.5 m/s
Answers
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6
Answer:
Answer is option 4th ie. 7.5 m/s
Explanation:
V1 = 10 m/s
V2 = 6 m/s [ By using (V1+V2)/2 ]
Avg speed = (2V1V2) / (V1+V2)
= 120 / 16
= 15/2 = 7.5
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Answer:
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