an over covers 1/3 of its journey with speed v1 for rest journey moves with speed v2 for time t2 and with speed v3 for time t3 calculate it average speed

an over covers 1/3 of its journey with speed v1 for rest journey moves

1.	an over covers 1/3 of its journey with speed v1 for rest journey moves with speed v2 for time t2 and with speed v3 for time t3 calculate it average speed
Answer» three equal DISTANCES be s each. Now, v=st⟹t=sv The time INTERVALS are, therefore, t1=sv1 t2=sv2 t3=sv3 The average SPEED is GIVEN by, ⟨v⟩= Total DistanceTotal Time ⟨v⟩=s+s+ssv1+sv2+sv3 ⟨v⟩=3ss(1v1+1v2+1v3 ⟨v⟩=31v1+1v2+1v3 ⟨v⟩=3v1v2v3v1v2+v2v3+v3v1

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an over covers 1/3 of its journey with speed v1 for rest journey moves with speed v2 for time t2 and with speed v3 for time t3 calculate it average speed​

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an over covers 1/3 of its journey with speed v1 for rest journey moves with speed v2 for time t2 and with speed v3 for time t3 calculate it average speed