Question

The displacement of a bicycle moving in a straight line is s(t)=0,5t^2+3t+5 m after t seconds. Find the acceleration when t=2 seconds.

Answer 1

s'(t)=velocity
s''(t)=acceleration
so that we have to find second derivation of s(t)
s'(t)=t+3
s''(t)=1
so acceleration is constant alwys 1

Answer 2

Thank you! :)