Reminders for July 7 July 5, 2008

MAPEH – Write your BMI and at least 16 exercises on a short bond paper. Can be computerized.

Physics – problem set and test on Monday

TLE – test on Monday. See Sir Otero’s site for more info.

Adv. Chem – buy 50 lvs. lesson plan

-write on a 1/4 sheet: Check if it corresponds to the solubility rule and write its equation:

1. sodium sulfate
2. silver chloride
3. iron (III) nitrate
4. chromium (III) hydroxide
5. barium chloride
6. magnesium hydroxide
7. chromium (III) carbonate
8. potassium phosphate
9. cadmium (II) carbonate
10. copper (II) hydroxide

Math – (write at the back of quiz ntbk): cscxsecx = (cscx+secx)/(cscx+sinx)

AP - buy 2 notebooks (any size, not spring) and manila paper.

Cheerdancers - bring P.E. uniform.

Homeroom – sinking fund ninyo.

p.s. Thank you kaayo to Zandra Go for the above information. hehe.

Physics: Problem Set 2 July 5, 2008

Answers available here.

Last name, First name

Year & Section

Physics

Problem Set

Date

Problem Set: Linear Motion with Constant Acceleration (due on July 7, 2008 )

1. A DC-8 airplane has a take-off velocity of 80 m/s, which it reaches 35 s after starting from rest. a) How much time does the airplane spend in going from 0 to 20 m/s? What distance does it cover in doing so? b.) How much time does the airplane spend in going from 60  to 80 m/s? What distance does it cover in doing so? c.) What is the minimum length of the runway?
2. A car moving at 20 m/s slows down at -1.5 m/s² to a velocity of 10 m/s. How far did the car go during the slowdown?
3. A car travelling at 35 mi/h is stopped in a distance of 2.5 ft when it hits a tree. a.) Calculate the average deceleration of the car. b.) Calculate the time needed to stop the car (assuming constant deceleration).
4. A bus driver forgets to stop at a bus stop. Just as she passes the stop, she decelerates. Five seconds later, the bus is 80 m beyond the stop and has slowed down to 10 m/s. a.) Calculate the speed of the bus as it passed the bus stop. b.) What is the deceleration of the bus (assumed constant)?
5. A truck moving at a constant speed of 20 m/s passes a car just as the car starts from rest with an acceleration of 2.0 m/s². How far does the car travel before it overtakes the truck?