A particle moving in a straight line covers half the distance with speed of 3m/s. The other half of the distance is covered in two equal time interval with speed of 4.5m/s and 7.5m/s respectively. The average speed of the particle during this motion is
A
4.0m/s
B
5.0m/s
C
5.5m/s
D
4.8m/s
Medium
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Updated on : 2022-09-05
Solution
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Correct option is A)
t1=32S=6S 2S=4.5×t2+7.5t3⇒12t2=2S
We have t2=t3 Total time t=t1+t2+t3=6S+24S+24S=4S Average of tS=4SS=4m/s
Solve any question of Motion in a Straight Line with:-