PDA

View Full Version : A runner and a bicyclist


justinL
Oct3-05, 07:40 AM
A runner starts from zero with a constant acceleration of 1.2 m/sec2. At the same time and same starting point, there is a bicyclist moving at uniform speed of 10 m/s. Who will reach the 200 meter line first?


I know this is probably a pretty simple question for most of you but the unit squared is throwing me off. I figured to use the formula R=DT. This seems obvious but there again I just can't seem to incorporate the units squared into the grand scheme of things. Any help and maybe and an explanation would be greatly appreciated.

Päällikkö
Oct3-05, 08:08 AM
For constant acceleration:
x=x_0+v_0t+\frac{1}{2}at^2