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8° y 9° acumulativa de física 1° periodo

Authored by Martha Duarte Bandera

Physics

8th Grade

Used 7+ times

8° y 9° acumulativa de física 1° periodo
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10 questions

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1.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

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2.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

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VAB=2kmh VBC=0 kmhV_{AB}=2\frac{km}{h}\ \ \ \ \ \ \ \ \ \ \ \ V_{BC}=0\ \frac{km}{h}

VAB=5 mseg VBC=7 msegV_{AB}=5\ \frac{m}{seg}\ \ \ \ \ V_{BC}=7\ \frac{m}{seg}

VAB= 53 mseg VBC= 25 mseg2V_{AB}=\ \frac{5}{3}\ \frac{m}{seg}\ \ \ \ \ \ \ \ V_{BC}=-\ \frac{2}{5}\ \frac{m}{seg^2}

VAB=2 mseg VBC=0 msegV_{AB}=2\ \frac{m}{seg}\ \ \ \ \ \ \ \ \ \ \ V_{BC}=0\ \frac{m}{seg}

3.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Un móvil va a 10 metros sobre segundo, cuando ha recorrido 4 metros su rapidez disminuye a 6 metro sobre segundo. Calcular cuánto tarda en detenerse.

tmx=0,8 kmht_{mx}=0,8\ \frac{km}{h}

tmx= 1,25segt_{mx}=\ 1,25seg

tmx= 0,8 ht_{mx}=\ 0,8\ h

tmx= 8segt_{mx}=\ 8seg

4.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Un móvil va a 120 metros sobre segundo, cuando frena con una desaceleración de 6metros sobre segundo al cuadrado, calcular la distancia que tarda en detenerse.

d= 12 metros

d= 1200 metros

d = 120 m/seg2

d = 10 metros

5.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

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a= 5 New

a = 49 m/seg2

a = 49 m/seg

a= 5 m/seg2

6.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

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a= 0,8 m/seg2

a = 0,78 m/ seg2

a = 7,67 m/ seg2

a = -8 m/seg2

7.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Calcula el tiempo que emplea el sonido en recorrer 663,4 kilómetros en el aire a 0° C

2000 seg

995,1 m/seg

3000 seg

2,2 seg

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