Aball is thrown from an initial height of 3 ft with an initial upward velocity of 27ft/s the balls height h (in feet) after t seconds is given by the following. h=3+27t-16t^2. find all values of t for which the balls height is 13 ft.

t = 0.55 s and t = 1.14 s

Explanation:

as we know that height in terms of time is given as

now we have to find the time at which its height is h = 13 ft

so here we can say

so it will be at h = 13 ft height at t = 0.55 s and t = 1.14 s

potential energy is directly proportional to height.

more height = more potential energy.

greatest increase in height = greatest increase in potential energy

where are the points with the greatest increase in height ?

has to be c-e or d-e .

i think they are all correct

explanation:

they seem good