holden is trying to determine the velocity of his race car. he went 20 meters east, turned around, and went…

holden is trying to determine the velocity of his race car. he went 20 meters east, turned around, and went 40 meters west. his car was 20 meters from the starting line. this took 5 seconds. what is the cars average velocity? 4 m/s east 4 m/s west 12 m/s west 12 m/s east

holden is trying to determine the velocity of his race car. he went 20 meters east, turned around, and went 40 meters west. his car was 20 meters from the starting line. this took 5 seconds. what is the cars average velocity? 4 m/s east 4 m/s west 12 m/s west 12 m/s east

Answer

Explanation:

Step1: Definir desplazamiento

El coche se mueve 20 m este y luego 40 m oeste. El desplazamiento neto es $40 - 20= 20$ m oeste.

Step2: Aplicar fórmula de velocidad promedio

La velocidad promedio $v=\frac{\Delta x}{\Delta t}$, donde $\Delta x$ es el desplazamiento y $\Delta t$ es el tiempo. Aquí, $\Delta x = 20$ m y $\Delta t=5$ s. Entonces $v=\frac{20}{5}=4$ m/s.

Answer:

B. 4 m/s west