
Ejercicios de Energía Mecánica
Authored by JAMES ESTRADA
Mathematics
1st - 2nd Grade
Used 8+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 5 pts
Un cuerpo de 200 g. se desplaza horizontalmente con una rapidez de 72 Km/h. Determine su energía cinética
45J
40J
50J
85J
20J
2.
MULTIPLE CHOICE QUESTION
5 mins • 5 pts
Un atleta de 60Kg parte del reposo con una aceleración de 4 m/s2.Determine su energía cinética luego de 3s
720J
460J
4320J
2460J
3.
MULTIPLE CHOICE QUESTION
5 mins • 5 pts
Una pelota de 1 kg al ser lanzada en la posición mostrada tiene una rapidez de 6m/s. Determine su energía mecánica respecto al nivel del piso ( g=10m/s2)
Dato: Altura= 6 metros
78J
60J
90J
68J
4.
MULTIPLE CHOICE QUESTION
5 mins • 5 pts
La energía potencial elástica almacenada en un resorte de masa despreciable y constante de rigidez (K=5000 N/m). cuando está comprimido en 20 cm.
50J
100J
250J
500J
5.
MULTIPLE CHOICE QUESTION
5 mins • 5 pts
Halle la velocidad del bloque cuando llega al piso, si el sistema se suelta desde la posición A. (g:10m/s2).
10 m/s
1 m/s
5 m/s
15 m/s
6.
MULTIPLE CHOICE QUESTION
5 mins • 5 pts
Un coche de montaña rusa resbala sin fricción por una rampa de modo que al pasar por "A" lo hace con una rapidez de 30m/s.¿Que velocidad poseerá cuando pasa por "B"? (g:10m/s2)
50m/s
20m/s
40m/s
10m/s
7.
MULTIPLE CHOICE QUESTION
5 mins • 5 pts
¿Con que rapidez deberá dispersarse verticalmente desde el piso un cuerpo de 50kg para que su energía potencial gravitatoria maxima sea de 100 J respecto del piso?
7.5 m/s
2m/s
5m/s
4m/s
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