Question

(02.03 mc) the graph shows the velocity f(t) of a runner during a certain time interval: which of the following describes the intercepts on the graph? (1 point) the initial velocity of the runner was 8 m/s, and the runner stopped after 2 seconds. the initial velocity of the runner was 2 m/s, and the runner stopped after 8 seconds. the initial acceleration of the runner was 8 m/s², and the runner stopped after 2 seconds. the initial acceleration of the runner was 2 m/s², and the runner stopped after 8 seconds.

Explanation:

Step1: Identify the y - intercept

The y - intercept of the velocity - time graph is the value of velocity at time t = 0. Looking at the graph, when t = 0, the velocity f(0)=2 m/s.

Step2: Identify the time when the runner stops

The runner stops when the velocity is 0. From the graph, the velocity is 0 at t = 8 s.

Answer:

The initial velocity of the runner was 2 m/s, and the runner stopped after 8 seconds.