Ask Question
9 February, 13:56

A ball is thrown vertically upward with an initial velocity of 48 feet per second. The distance s (in feet) of the ball from the ground after t seconds is s = 48 t - 16 t ^2. (a) At what time t will the ball strike the ground? (b) For what time t is the ball more than 32 feet above the ground?

+2
Answers (1)
  1. 9 February, 17:56
    0
    Hello,

    s=48t-16t²

    a)

    s=0==>16t (3-t) = 0==>t=0 or t=3

    b)

    s>32==>48t-16t²>32===>16 (t²-3t+2) <0

    Δ=9-8=1

    ==>16 (t-1) (t-2) <0

    ==>1
Know the Answer?
Not Sure About the Answer?
Find an answer to your question ✅ “A ball is thrown vertically upward with an initial velocity of 48 feet per second. The distance s (in feet) of the ball from the ground ...” in 📘 Mathematics if you're in doubt about the correctness of the answers or there's no answer, then try to use the smart search and find answers to the similar questions.
Search for Other Answers