JEE Main 2024 Physics question
A particle moving in a straight line covers half the distance with speed 6 m/s. The other half is covered in two equal time intervals with speeds 9 m/s and 15 m/s respectively. The average speed of the particle during the motion is :
Answer: (D)
Solution
Let the total distance be 2S. The second half takes two equal times t with S = 9t + 15t =
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