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Display MOB
Mar24-08, 09:59 AM
1. The problem statement, all variables and given/known data
A Car Completes two laps of a 2.2 km racetrack is 98 seconds Find:
A.) The Cars distance travelled (in km).


2. Relevant equations+3. The attempt at a solution
I know that you have to multiply 2.2km by 2 laps but for my homework i have to show a formula and complete a full answer
(what am i given)
[something] = 2 [meaning laps]
[something] = 2.2 km
\Deltad = ?

(required formula)
\Deltad = [something]*[something]
\Deltad = 2 * 2.2
\Deltad = 4.4 km

(therefore statement)
[therefore] the distance travelled by the runner would be 4.4 km



I know what 2*2.2 is im not stupid but i don't know the correct formula to use and i don't know what symbols to fill in where the [somethings] are. Help?
Kurdt
Mar24-08, 10:45 AM
Strange question. There is no particular formula other than the distance is equal to the no. of laps multiplied by the distance per lap.
Display MOB
Mar24-08, 11:12 AM
Strange question. There is no particular formula other than the distance is equal to the no. of laps multiplied by the distance per lap.

Also if asked for the displacement of the object, it would be 0 due to the circular track you would end where you started correct? Is there a formula for displacement using the given information or what should i show to get 0 as displacement.
Kurdt
Mar24-08, 11:14 AM
Also if asked for the displacement of the object, it would be 0 due to the circular track you would end where you started correct? Is there a formula for displacement using the given information or what should i show to get 0 as displacement.

You are correct that displacement would be zero but for this problem i don't think you'd have to show anything other than state that its zero.
Display MOB
Mar24-08, 11:16 AM
You are correct that displacement would be zero but for this problem i don't think you'd have to show anything other than state that its zero.

Mmm alright i'll have to ask my prof on wed. because it wants a forumla..mabey im supposed to just figure that out or something.
Kurdt
Mar24-08, 11:34 AM
There isn't really an equation you can give. You're just using your knowledge that the track starts and ends at the same point.