Velocity questions

I really confused by the following:

The distance between two black lines is 2 metres.
The car passed 8 lines, and it uses 0.4 seconds
such that: Ω represents the car.
_____Ω_____<— after
___________
___________
___________
___________
___________
___________
_____Ω_____<—– before

Is the velocity of the car 7*2/0.4= 35 ms-1 ??
Besides, can I say that the assumption behind is that the car is moving at constant velocity?
If not, what is the assumption?

THX

http://ift.tt/1n4E13k

Leave a comment

Your email address will not be published.


*


Show Buttons
Hide Buttons