Hi can you please help me with this question step by step thank you!

b) Using the equation found in part a), what is the approximate velocity of the rocket at t=4 seconds? Use h=0.0001 and round all numbers to 4 decimal places. c) Explain what the rocket is doing at t=4 seconds and how you know. d) Using the equation found in part a), what is the approximate velocity of the rocket at t=3 seconds? Use h=0.0001 and round all numbers to 4 decimal places. e] Explain what the rocket is doing at t=3 seconds and how you know. f) Explain why the answers in parts b and c are considered approximate? 1. a) A toy rocket is launched straight up so that its height, s, in metres, at time t, in seconds, is given by s(t) = -5t2 + 30t + 2. Determine a simplified equation for the velocity (IROC) for any value of t using the difference quotient