CUP Física 2a
Quiz
•
Physics
•
1st Grade
•
Practice Problem
•
Medium
José C
Used 18+ times
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16 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A todos los cuerpos de caída libre la estudiamos en
Estática
Dinámica
Vectores
Óptica
Ninguna
Answer explanation
Cinemática
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Dos vehículos, el primero con velocidad de 900 km/h, y el segundo con 300 m/s, ¿cuál de ellos es el más veloz?
El primero
El segundo
Son iguales
Desiguales
Ninguno
Answer explanation
900 km/h x 1000 m/1 km x 1 h/3600 s = 250 m/s
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Un taxi viaja de Santa Cruz a San Ignacio con una velocidad constante de 100 km/h y tarda 6,5 h. ¿Cuál es el espacio recorrido?
200 km
400 km
650 km
500 km
Ninguna
Answer explanation
v=d/t
d=vt => 100 km/h x 6,5 h
d=650 km
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
En un movimiento rectilíneo uniforme, no hay:
aceleración
trabajo
masa
velocidad
ninguno de los incisos
Answer explanation
Características de MRU:
v=constante
a=cero
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
¿Cuál es la fórmula adecuada para la aceleración?
a=Vf-Vi/t
a=Vi-Vf/t
a=Vi+Vf/t
a=Vf+Vi/t
Ninguna
Answer explanation
La fórmula se obtiene despejando a de:
vf = vi + at
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Un estudiante parado de masa 60 kg en punto de la tierra en equilibrio; la acción y reacción es: (g = 10 m/s2)
2 N y 2 N
3 N y 3 N
6 N y 6 N
600 N y 600 N
Ninguno
Answer explanation
w=mg => 60 kg x 10 m/s2
N = kg x m/s2
La acción del estudiante sobre la tierra es de 600 N y la reacción en este caso es el mismo valor
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
El coeficiente de fricción es una magnitud
Escalar
Vectorial
Tensorial
Eléctrica
Ninguna
Answer explanation
El coeficiente de fricción no tiene unidad, es adimensional
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