Solve the each part of given question:
Question: Suppose the bicyclist above rolls down a hill with velocity vx = (10.0 + 7.0 t) m/s.
Part A: What is the instantaneous velocity of the cyclist at t = 5 s?
Part B: What is the average acceleration of the cyclist between t = 1 s and 5 s?
Part C: What is the instantaneous acceleration at t = 5 s?
Please show work I think I have the answer just not positive.