Power and Enegey

Engineering: Straw Rockets

Conclusion

Was your Straw Rocket successful in flying?

lf not, what do you think caused the problem?

What was the most difficult part of building your Straw Rocket?

If you w,ere to build another Straw Rocket what would you do the same?

What would you want to change?

ared To Engineer

Page 7

@2072

Mrs. tsedi's General Science Class

Name

--- Class

:,

--

Period -----------

Date

r---i-r

l

weight= mass times g.8m/sec square

For converting grams to kilograms = Divide grams by 1000

For converting centinEters to nreters = Bivide eentimeters by 100

Mass of

Roeket in

Distance

Time in

inm

$eG

Weight

in kg

nass tines

kg

9-Msec

squaG

i-

Force

in

W= F*D

JOULES

P=Wff

WAfiS

N=rn"==

tines

35ny'see

square

Gonclusion of straw rocket lab in paragnaph format

.. -.={

Mrs. Bedi's GeneralScience Class

Name'

,

Class

Period

Date

-----

Read the following sentences and write TRUE OR FALSEI

1. I Power is the rate at which work is done.

2. The Sl unit for power is watt.

3. When calculating power, you should use the formula P= WORK DIVIDED BY TIME

4. The SI unit of work is joule.

5. Joule is represented by J

6. When calculating work, you should use the formula : WORK = FORCE TIMES

DISTANCE

7. Work is done when an object move through a distance because of a foree acting upon the

object.

B. HOW MUCH

WORK IS DONE WHEN A FORCE OF 33N PULLS A WAGON 13 METERS ?

9. HOW MUCH WORK IS REQUIRED TO PULL A SLED 5 METERS IF YOU USE 6ON OF

FORCE ?

10. IF A MAN MOVES A LARGE BOX THAT WEIGHS 10 NEWTONS 20 METERS IN 30

SECONDS, HOW MUCH POWER WAS USED ?

Name

Date

Class

Work and Power Activity

Problems: Which do you think takes more work: running or walking up a set of stairs? Which

takes more power?

Hypothesis:

Let's do

a test

to find out whether or not you were correct

Procedures:

1.

2.

3....