Examen Fisica 2C
Quiz
•
Physics
•
8th Grade
•
Practice Problem
•
Hard
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25 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 4 pts
¿Cuál de las siguientes es la primera Ley de Newton?
F = m x a
Todo cuerpo permanece en reposo o movimiento rectilíneo uniforme a menos que una fuerza externa actúe sobre él.
La fuerza es la acción es igual a la fuerza de reacción.
La aceleración es inversamente proporcional a la masa
2.
MULTIPLE CHOICE QUESTION
2 mins • 4 pts
¿Cuál es la formula de la Segunda Ley de Newton?
F = m · a
F = m · v
F = m · g
F = v · t
3.
MULTIPLE CHOICE QUESTION
2 mins • 4 pts
La Tercera Ley de Newton establece que:
La fuerza es igual a la masa por la aceleración.
Para toda acción hay una reacción igual y en sentido contrario.
La velocidad es constante en ausencia de fuerzas.
La energía se conserva en un sistema cerrado.
4.
MULTIPLE CHOICE QUESTION
2 mins • 4 pts
Cuando una fuerza de 10 N actúa sobre un objeto de 2 kg, ¿ es su aceleración?
5 m/s²
20 m/s²
0.2 m/s²
10 m/s²
5.
MULTIPLE CHOICE QUESTION
2 mins • 4 pts
Un objeto de 5 kg se mueve con una aceleración de 4 m/s². ¿Cuál es la fuerza neta que actúa sobre él?
1.25N
9N
0.8N
20 N
6.
MULTIPLE CHOICE QUESTION
2 mins • 4 pts
¿Qué fuerza se necesita para acelerar un objeto de 10 kg a 2 m/s²?
5N
20N
0.2N
12N
7.
MULTIPLE CHOICE QUESTION
2 mins • 4 pts
Convierte 72 km/h a m/s.
20 m/s
25 m/s
15 m/s
30 m/s
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