Rate of change help
The height (in m) that an object has fallen from a height of 180 m is given by the position function s(t) = -5tsquared + 180, where t > or equal to 0 and t is in seconds.
a. Find the average velocity during each of the first 2 seconds.
b. Find the velocity (instantaneous) of the object at t = 4
c. At what velocity will the object hit the ground?
I tried these, and got different answers then the correct ones. Help me out?
Please SHOW your work.
Velocity at a moment? That's what a derivative is for.
Average Volocity over time? That's what integrals are for.
When does it hit the ground? That's what the position function is for.
Let's see how you managed what you managed.