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?


Leave a Reply

Name *
Email *