Question

1. ari walked down the hall at school from the cafeteria to the band room, a distance of 100.0 m. a class of physics students recorded and graphed aris position every 2.0 s, noting that he moved 2.6 m every 2.0 s. when was ari 25.0 meters from the cafeteria? 10.0 s 19.2 s 22.0 s 25.0 s clear all

Explanation:

Step1: Calcular la velocidad

La velocidad $v$ se calcula como la distancia recorrida dividida por el tiempo. Sabemos que recorre $d = 2.6$ m cada $t = 2.0$ s. Entonces $v=\frac{d}{t}=\frac{2.6}{2.0}=1.3$ m/s.

Step2: Calcular el tiempo

Queremos encontrar el tiempo $T$ cuando la distancia $D = 25.0$ m. Usando la fórmula $v=\frac{D}{T}$, despejamos $T$. Entonces $T=\frac{D}{v}=\frac{25.0}{1.3}\approx19.2$ s.

Answer:

19.2 s