A racecar starting from rest accelerates uniformly at #4.9# #m##/##s^2#. What is the car's velocity after it has traveled 200 meters?
1 Answer
May 26, 2017
Explanation:
This can be solved with kinematics. We will use the following kinematic equation:
#v_f^2=v_i^2+2aDeltas# where
#v_f# is the final velocity,#v_i# is the initial velocity,#a# is the acceleration, and#Deltas# is the displacement.
In our case,
#=sqrt(2(4.9m/s^2)(200m))#
#~~44m/s#