Question

Dina is walking 0.5 m/s forward on a train that is traveling at 8.0 m/s north. What is Dina's velocity relative to the ground?

Answer 1

her velocity is 0.82012

Answer 2

Dina's velocity relative to the ground is 7.5 m/s.

Step-by-step explanation:

Given that,

Velocity of Dina v = 0.5 m/s

Velocity of train v' = 8.0 m/s

We need to calculate the Dina's relative velocity

Using formula of relative velocity

Relative velocity=velocity of train - velocity of Dina

`v_(r)=v'-v`

Where, v' = Velocity of train

v = Velocity of Dina

Put the value into the formula

`v_(r)=8.0-0.5`

`v_(r)=7.5\ m/s`

Hence, Dina's velocity relative to the ground is 7.5 m/s.