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

Answer:

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

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.

Answer 2

her velocity is 0.82012