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

• always use significant figure rules. remember that these rules apply to all numbers that are measurements. if an object starting from rest and position d₀ = 0 attains a velocity of 20 m/s at d = 50 m, calculate the acceleration required.\n4 m/s\n10 m/s\n4 m/s²\n8 m/s²

• always use significant figure rules. remember that these rules apply to all numbers that are measurements. if an object starting from rest and position d₀ = 0 attains a velocity of 20 m/s at d = 50 m, calculate the acceleration required.\n4 m/s\n10 m/s\n4 m/s²\n8 m/s²

Answer

Explicación:

Paso 1: Identificar la ecuación de movimiento

Utilizamos la ecuación $v^{2}=v_{0}^{2}+2a(d - d_{0})$. Dado que el objeto parte del reposo, $v_{0}=0$ y $d_{0}=0$. La ecuación se simplifica a $v^{2}=2ad$.

Paso 2: Despejar la aceleración

Despejando $a$ de $v^{2}=2ad$, obtenemos $a=\frac{v^{2}}{2d}$.

Paso 3: Sustituir valores

Sustituimos $v = 20$ m/s y $d = 50$ m en la fórmula: $a=\frac{(20)^{2}}{2\times50}$. $a=\frac{400}{100}=4$ m/s².

Respuesta:

C. 4 m/s²