Question

A particle is moving is straight line covers half the distance with the speed of 3 m/s. The other half distance is covered in two equal interval of time with the speed of 4.5 m/s & 7.5 m/s respectively. Find the average speed of particle during this motion


a) 4 m/s

b) 5 m/s

c) 5.5 m/s

d) 4.8 m/s

Answer 1

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Answer 2

answer is in attachment

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