Question

solve this problem if you can​

Answer 1

Answer:

9 m/s

Explanation:

s = 5t² + 9t

By differentiating,

Δs/Δt = 2*5t + 9 = 10t + 9

Now,

Instantaneous velocity (for t=0)=   10t + 9

                                                   =   10(0) + 9

                                                   =   0 + 9 = 9m/s