Question

you walk toward a starting line, from 80 m to 20 m on a track in 50 seconds. what is your velocity? velocity = ? m/s velocity = $\frac{delta x}{delta t}$ round your answer to the nearest tenth. movement away is positive; toward is negative. remember to indicate magnitude and direction (+ or -).

Explanation:

Step1: Calculate displacement

The initial position $x_1 = 80$ m and the final position $x_2=20$ m. Displacement $\Delta x=x_2 - x_1=20 - 80=- 60$ m.

Step2: Identify time interval

The time interval $\Delta t = 50$ s.

Step3: Calculate velocity

Using the formula $v=\frac{\Delta x}{\Delta t}$, we substitute $\Delta x=-60$ m and $\Delta t = 50$ s. So $v=\frac{-60}{50}=-1.2$ m/s.

Answer:

$-1.2$ m/s