
Energía mecánica
Authored by ADRIANA RAMOS
Physics, Mathematics
5th Grade
Used 6+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Un leopardo de 40kg corre a 54km/h. Halle su energía cinética, dar como respuesta la suma de cifras del resultado.
8
4
9
7
2.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Una canasta con manzanas cuelga de un árbol de 8 metros, si su energía potencial es de 320 J. Hallar el peso de la canasta.
4 kg
6 kg
3 kg
5 kg
3.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Un resorte almacena una energía elástica de 100 J, si está comprimido en 20cm. Determine la constante elástica en N/m
4900 N/m
5050 N/m
4500 N/m
5000 N/m
4.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Si una caja de 10kg es soltada en una supercifie inclinada de 80m, determine su velocidad cuando llegue al piso.
90 m/s
80 m/s
40 m/s
50 m/s
5.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Un auto baja por una pendiente de cierta altura con una velocidad de 4m/s, tiempo despúes se encuentra a la mitad de esta altura y se moviliza a 8m/s. Sabiendo que el auto pesa 1200 kg, hallar la altura inicial
4640 m
4800 m
3500 m
4300 m
6.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Si un ciclista de 60kg parte del reposo con una aceleración de 6m/s2. Encuentre su energía cinética después de 4 segundos.
700 J
740 J
690 J
720 J
7.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
¿Cuál es la energía mecánica de un cuerpo a 14m de altura que se moviliza con una velocidad de 6m/s? (Peso del cuerpo: 10 kg)
1580 J
1630 J
1550 J
1710 J
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