Respuesta :
The average speed of the trip from B to C should be
V2=(ΔL2V1)/(ΔtV1 - ΔL1)
The journey from B to C should be made at an average speed of
<V> = ΔL/Δt
The entire voyage must take at least
Δt=Δt1+Δt2
Δt - Δt1=Δt2.....eqn.(i).
V1 =ΔL1/Δt1..... eqn.(ii) and V2=ΔL2/Δt2
substituting (Δt - Δt1=Δt2 ) from eqn(i) in the above eqn
V2=ΔL2/(Δt - Δt1)
and substituting the value of Δt1 from eqn(i) in the above equation
V2=ΔL2/(Δt - (ΔL1/V1))
now by rearranging the terms we get
V2=ΔL2V1/(ΔtV1 - ΔL1)
What do mean by average speed?
The object's average speed is the total distance it travels in a predetermined amount of time. A scalar value is used to represent the normal speed. It is characterized by the magnitude and lacks direction.
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