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 spee

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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 :

TestHub · Accepted Answer

​ BD ⇒ S = 9 t + 15 t = 24 t AB ⇒ S = 6 t 1 ​ = 24 t ⇒ t 1 ​ = 4 t < speed > ​ = time dist. ​ = 2 t + t 1 ​ 48 t ​ = 2 t + 4 t 48 t ​ ⇒ 6 t 48 t ​ ⇒ 8 m / s ​ ​

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