Question

An object is thrown straight down from the top of a 220-foot building with an initial velocity of 26 feet per second. What is the velocity at 1 second?

Answer 1

i think this belongs to physic department ? o_O

Answer 2

Well, it's part of my calculus homework.

Answer 3

Never mind, I got it.

Answer 4

can i know how ? :D

Answer 5

Write the position equation first, which is s(t)=-16t^2-26t+220

Answer 6

Then find the derivative of it which is -32t-26

Answer 7

plug in 1 for t into that equation and you get the velocity.