Question

Timmy runs 144 meters in 200 seconds going East.
What is Timmy's velocity?

Answer 1

0.72 m/s to east

Explanation:

Velocity is displacement over time. Displacement is change in position and because Timmy's position is straight forward without changing any direction. Therefore, displacement is 144 meters with time as 200 seconds.

From:

`\displaystyle{\vec v = (\vec s)/(t)}`

where
`\displaystyle \vec v` is velocity,
`\displaystyle{\vec s}` is displacement and
`\displaystyle{t}` is time. Substitute
`\displaystyle{\vec s}` = 144 meters and t = 200 seconds in:

`\displaystyle{\vec v = \frac{144 \ \, \sf{meters}}{200 \ \, \sf{seconds}}}\\\\\displaystyle{\vec v = 0.72 \ \, \sf{m/s} \ \, \sf{East}}`

Therefore, his velocity is 0.72 m/s to East.