A particle moves according to the equation x= (10 m/s^2)t^2 where x is in meters and t is in seconds.

a. Find the average velocity for the time interval from t1= 2.38 s to t2= 4.3 s.
Answer in units of m/s.

b. Find the average velocity for the time interval from t1= 2.38 s to t3= 2.48 s.
Answer in units of m/s.