4. at ti = 0 a ball is thrown straight upward from yi = 0 at an initial speed vi. while in the air it is in free fall. (a) sketch ay-t, vy-t and y-t graphs for the motion (b) what are the magnitude and direction of the acceleration while the boulder is  moving upward?  moving downward?  at the highest point? (c) when is the velocity of the ball zero? (d) find the maximum height ymax reached by the ball. (e) find the time at which the ball reaches this maximum height. (f) at what time is the ball moving at vi/2 upward? (g) at what time is it moving at vi/2 downward? (h) at what time does the ball return to its initial position? (i) how long is the ball in the air above some arbitrary height h? (j) check that your answer for (i) makes sense. if you set the height to h = 0, you should get the same answer as for part (h). if you set the height to h = ymax you should get δt = 0.

i think it's 35 meters

the order for strong to weak forces such as

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force

the fundamental forces are those forces that act between to objects or element to make interactions. there are four types of fundamental forces such as strong and weak nuclear forces (due to protons and electrons), electromagnetic force (due to the motion of electrons) and gravitational force (due to orbital movement of the planet). if these forces are arranged on the basis of their maximum strength then the order is

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force

we're given that v₀ = 0 and a = 5.4 m/s². therefore, since v = at + v₀ for constant acceleration the equation for velocity is

after 28s,

m/s

which i would round to 150 m/s as my final answer

im srry but ur wrong the answer is d a smooth rock, some red dirt, and an empty bird's nest.