Average Acceleration Problem checking answer

Join the discussion
Registration is free. Ask a follow-up in this thread, or start your own.
1 reply · 2K views
fattydq
Messages
79
Reaction score
0
A sports car accelerates from rest to 98 km/hr in 18 s. What is its average acceleration in m/s^2?NOTE: Do NOT include units in your answer, just type in the number value!

What I did was immediately make 98 km into 98000 meters. I then took 98000 and divided it by 60 twice (once would make it m/minute, again to make it m/second) and got 27.222222. I took this final answer, divided it by 18 seconds, got 1.512345679, and changed it to 1.5 taking significant figures into account.

So would my final answer of 1.5 m/s^2 be correct?
 
Physics news on Phys.org
As far i as know your working looks fine:biggrin: