QUESTION IMAGE
Question
how much force is needed to accelerate a 1000kg car at a rate of 3m/s²?
a weightlifter raises a 200kg barbell with an acceleration of 3 m/s². how much force does the weightlifter use to raise the barbell?
how much force does a 0.25kg apple have with an acceleration of 9.8 m/s²?
calculate the force needed to accelerate a 1,700kg car forward at 3.5 m/s².
Step1: Identificar la fórmula
Usamos la segunda ley de Newton $F = ma$, donde $F$ es la fuerza, $m$ es la masa y $a$ es la aceleración.
Step2: Calcular fuerza para el auto de 1000 kg
Dado $m = 1000$ kg y $a=3$ m/s², entonces $F = 1000\times3=3000$ N.
Step3: Calcular fuerza para la barra de pesas
Dado $m = 200$ kg y $a = 3$ m/s², entonces $F=200\times3 = 600$ N.
Step4: Calcular fuerza para la manzana
Dado $m = 0.25$ kg y $a = 9.8$ m/s², entonces $F=0.25\times9.8 = 2.45$ N.
Step5: Calcular fuerza para el auto de 1700 kg
Dado $m = 1700$ kg y $a = 3.5$ m/s², entonces $F=1700\times3.5=5950$ N.
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- Para el auto de 1000 kg: 3000 N
- Para la barra de pesas: 600 N
- Para la manzana: 2.45 N
- Para el auto de 1700 kg: 5950 N