# Motion Problem

1. Mar 23, 2008

### Display MOB

A Runner Completed four laps of a 400m track in 6.0 minutes. Find the distance travelled and displacement of the runner.

Ok i know that distance would be 400m * 4 laps obviously but how would you write that out? What would a formula be? (Complete guess below, obviously not right.)
d1 = 400m
??? = 4 (meaning laps)
$$\Delta$$d = ?

and my formula and therefore statement would follow..

Second Question.
Isn't finding displacement for this questions pointless because you would be in the same place you started out as? Also i don't know the equation i would use to find displacement given only speed and time.

I am in grade 10 physics so please take it easy if you think there are obvious answers and please dont give me to complicated feedback :).

Last edited: Mar 23, 2008
2. Mar 23, 2008

### rock.freak667

Distance covered in 1 lap =400m
No. of laps run=4
Total distance covered=(400*4)m

I would assume that the displacement is zero because as you said, the runner finished where he started so.