Question 3 (3 points) The height,
h(t)
above the ground (in m ) of a person riding a roller coaster,'
t
'seconds after the ride begins can be modelled by the equation. a) b)
h^(')(t)=3t-15cos(0.5\pi t)
c) Is the person moving away from or towards the ground 5 s after it starts moving? Justify and explain your answer by using an interval chart.