« previous next »
Pages: [1]   Go Down

Author Topic: First question in physics last night in paper one  (Read 1443 times)

Offline ayoubi

  • Newbie
  • *
  • Posts: 12
  • Reputation: -4
First question in physics last night in paper one
« on: June 11, 2009, 09:52:23 am »
it was very very tricky...
i chosed C as the answer of 60km/h by adding 90+30/2
what about you guyz?
Logged

Offline bball92

  • SF Immigrant
  • **
  • Posts: 91
  • Reputation: 17
Re: First question in physics last night in paper one
« Reply #1 on: June 11, 2009, 09:54:47 am »
i chose 50, because even though the top speed of the car was never more than 90 and lowest speed was 30, the total distance travelled was 100KM, if you took 60 as ur average speed per hour for your journey, that would mean u end up travelling 120km overall which is incorrect :S.

Thats the way i looked at it :P
Logged

Offline IGis2easy

  • Newbie
  • *
  • Posts: 13
  • Reputation: -2
Re: First question in physics last night in paper one
« Reply #2 on: June 11, 2009, 12:40:40 pm »
no man ure rite its 90 + 30 /2 giving 60 ;D
i am pretty sure cuz i checked the answer with ma teacher  ;) :D
Logged

Offline susman

  • SF Immigrant
  • **
  • Posts: 110
  • Reputation: -5
  • Gender: Male
    • Usman Website
Re: First question in physics last night in paper one
« Reply #3 on: June 11, 2009, 01:40:25 pm »
well i thought the max and min speed was given to confuse you...
avg speed is total distance / total time taken..
it comes out to be 50 km/hr
the 60 km/hr is wrong
Logged

Offline thukon

  • SF Citizen
  • ***
  • Posts: 250
  • Reputation: 128
  • Gender: Male
  • Blah
Re: First question in physics last night in paper one
« Reply #4 on: June 11, 2009, 01:51:13 pm »
60km/h is WRONG. 50 is correct. They gave you the max and min values to confuse you. Your physics teacher must be like my physics teacher/
Logged

Offline sundars

  • Newbie
  • *
  • Posts: 22
  • Reputation: 9
  • Gender: Male
Re: First question in physics last night in paper one
« Reply #5 on: June 11, 2009, 01:55:27 pm »
It's 50km/h since 100/2=50, not 60.
What was the last answer was it 16 nucleons.
Logged
What you see depends on what you're looking for.
Life is 10% of what happens to me and 90% of how I react to it.

panther

  • Guest
Re: First question in physics last night in paper one
« Reply #6 on: June 11, 2009, 02:36:23 pm »
The maximum and minimum speed has nothing to do with the average.

Average speed = Total distance/Total time
Logged

Offline shagurl

  • Newbie
  • *
  • Posts: 32
  • Reputation: 1
Re: First question in physics last night in paper one
« Reply #7 on: June 12, 2009, 04:12:29 am »
Quote from: Panther on June 11, 2009, 02:36:23 pm
The maximum and minimum speed has nothing to do with the average.

Average speed = Total distance/Total time

AGREDD ;D ;D ;D ;D
Logged

Offline IG4ever

  • Newbie
  • *
  • Posts: 42
  • Reputation: 58
Re: First question in physics last night in paper one
« Reply #8 on: June 12, 2009, 05:23:16 am »
yup AVERAGE speed = Total distance traveled / Total time taken... 100/2= 5o km/hr.
no use of the max.and min. speed. CIE wanted to confuse us  :o
Logged

Offline godfather93

  • SF Senior Citizen
  • *****
  • Posts: 720
  • Reputation: 799
  • Gender: Male
  • Tomorrow is a day that changes everyday
Re: First question in physics last night in paper one
« Reply #9 on: June 12, 2009, 06:25:55 am »
60+30/2 is the average of the speeds whereas 100/2 is the average speed.
Logged
Pages: [1]   Go Up
« previous next »