Question

S= 100 km
Velocity 1 = 50 km in
velocity Average= 40 km
velocity 2=?
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Answer 1

Answer:

Average velocity = Intial v + final v/2

40 = 50+v/2

40 multiply 2 = 50+ v

80=50+v

80-50= v

v=30

Answer 2

V av=V1+V2/2

Here V1=50,V2 be x

so 50+x/2=40

implies 50+x=80

so x=30km