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Lesson Plan-Grade Level - 8th

Cleophas "Mike" McAlpin................Tutor---January 10, 2001

The examination below is based upon  subject matter that has been covered over the past month.  Time limit is two hours. All students; print out and begin examination after homework. No talking!

Physics:

1. What is kinetic energy and potential energy and what is the formula for each?

Ans:

 

2. What does  "Conservation of Energy" mean?

Ans:

3. Convert:

www.convert-me.com         (Units conversions...English-Metric)

(a.) 2 miles =           ____________ ? feet

(b.) 1.5 miles=         ____________ ? feet

(c.)  2/3  mile=         _____________?feet

(d.) 1 meter =          _____________?feet

(e.) 800 meters = ______________?feet

(f.)  9.8 meters =  ______________?feet

(g.) Change your weight in pounds______ to kilograms____________.

4. If a student runs an 800-meter race in 2 minutes and 20 seconds, what is the speed of the runner in meters per second?

5. What is the formula for velocity?   Acceleration?

5a. A body is dropped from a ceiling that has a height of 7 feet. If it takes the body o.70 seconds to hit the floor, what is its acceleration? Does it matter how heavy the object is. (neglecting air friction)? Is this acceleration constant for all free-falling bodies such as this one? Remember S = 1/2 GT2

Ans.

6. What is the acceleration due to gravity, G, and what does it mean?

Ans.

7. A body has a mass of 50-Kg and has a height above ground of 4-meters. What is its Potential Energy in Joules?

Ans.

8. A body that has a mass of 50-Kg has a velocity of  8 meters per second. What is its Kinetic Energy?

9. A roller coaster car of mass 100 Kg has a passenger of mass 50-Kg riding in it. The car is 4 meters above ground and is moving along at a speed of 4 m/sec before it drops down an incline. How far up the other side of the track will the car go before coming to rest? Does the angle of descent have anything to do with the height obtained? Does the weight of the car and passenger have anything to do with the height obtained? What is the sum of both the kinetic and potential energy before the car starts down the incline?

10. A body is held at the top of an inclined plane that makes an angle of 40° with the horizontal. The mass of the body is 20 Kg. The coefficient of friction that the body makes with the surface is equal to 0.08. If the body is allowed to slide down the plane, what acceleration does it obtain? Draw a diagram of this problem and label all of the forces acting on the body. Does the mass of the body matter? What is the acceleration of the body is the incline is moved to 90°? Why?

Spanish Language:

Tanslate into English:

libro, cerrado, como, esta, usted, muy, bien, gracious, donde, el, si, computadora, silla, sofa, sobre, la, mesa, luz, agua, perro, gato, dedo, brazo, pie, fresca, te, hombre, padre, madre, hermano, hermana, tio, tia, nina, ventanna, abierto, calle, dinero, una, tres, verdad, aqui, alli, accion, agente, atencion, cheque, cuestion, ejemplo, quieto, restaurante, dificil, facil, necesario, paraguero, plaza, amigo, amiga, hora, con, siete, tiene, hablo, yo, tu, nosotros, hoy, sabado, domingo, lunes, martes, octubre, mayo, junio, diez, que, espanol, me llamo, pollo, para, rico, reloj, fruta, ayer, fue, marzo, azul, blanco, miercoles, cuarto, ocho, dos y dos son cuarto, viernes, verde, blanco, negro, agosto, abril, el otono, norte, este, oeste, tarde, manana, noche.

Ans. Use additional scratch paper and turn in with examination.

Mathematics:

Graph the straight lines: What is the slope of each line?

 (1.)       y = 3 X - 4               (2.)  y = 2/3 X + 3        (3.)  y = 0.4 X + 2

Solve the following:

(2.)     Y = 3 X + 2 X - 8 X - ( -2 X - 3 X)  + 20  Find Y,  if X is equal to 3.

( 3.)    If:    T2 =  81, what is "T"?

( 4.)    If:    T2  + ( - 100) = 0,  what is "T"?

(5.)  Draw the atomic symbols for hydrogen and oxygen. What is  the Electrolysis of Water and explain how it is done.

(6.)  Give some of the physical and chemical characteristics of  sodium, chlorine, hydrogen, oxygen, helium, and nitrogen.

(7.) What are ulcers and how are they treated?

(8.) Use the formula, C = 5/9 ( F- 32) to change the following Fahrenheit temperatures to the Centigrade scale.

(a) Your body temperature.

(b) The  temperature outside. (approximate)

(c) The freezing point and boiling point of water.

(d.) Las Vegas in August. (approximate)