# Motion and acceleration in a straight line [closed]

A car with an initial velocity of 3 m/s has a velocity of 34 m/s after 3 sec. How far it moves in its third second of motion?

acceleration V=U + at a = 10.3 m/s^2

x = ut + 1/2 a t^2

x = 3 (3) + 1/2 (10.3) (3x3)

x = 56.25 m

but answer in book = 29 m ??

## closed as off-topic by John Rennie, Danu, user10851, ACuriousMind♦, Kyle KanosSep 27 '14 at 11:35

This question appears to be off-topic. The users who voted to close gave this specific reason:

• "Homework-like questions should ask about a specific physics concept and show some effort to work through the problem. We want our questions to be useful to the broader community, and to future users. See our meta site for more guidance on how to edit your question to make it better" – John Rennie, Danu, Community, ACuriousMind, Kyle Kanos
If this question can be reworded to fit the rules in the help center, please edit the question.

• "in its third second", not in three seconds – 299792458 Sep 27 '14 at 9:32