always use significant figure rules. remember that these rules apply to all numbers that are measurements. a…

always use significant figure rules. remember that these rules apply to all numbers that are measurements. a penny is dropped into a well. it takes 5 seconds to fall. calculate the depth of the well in feet. 100 400 300

always use significant figure rules. remember that these rules apply to all numbers that are measurements. a penny is dropped into a well. it takes 5 seconds to fall. calculate the depth of the well in feet. 100 400 300

Answer

Explicación:

Paso 1: Identificar la fórmula

Para un objeto en caída libre, la distancia $d$ que recorre en un tiempo $t$ está dada por la fórmula $d = v_0t+\frac{1}{2}gt^{2}$, donde $v_0$ es la velocidad inicial. Como la moneda es soltada, $v_0 = 0$. La aceleración debida a la gravedad $g$ en pies por segundo al cuadrado es aproximadamente $g = 32\ ft/s^{2}$.

Paso 2: Sustituir valores

Sustituimos $v_0 = 0$, $t = 5\ s$ y $g = 32\ ft/s^{2}$ en la fórmula. Como $v_0 = 0$, la fórmula se reduce a $d=\frac{1}{2}gt^{2}$. Entonces $d=\frac{1}{2}\times32\times5^{2}$.

Paso 3: Realizar cálculos

Primero calculamos $5^{2}=25$. Luego $\frac{1}{2}\times32 = 16$. Finalmente, $d=16\times25 = 400\ ft$.

Respuesta:

400