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.

the only real purpose of sputnik 1 was to beat the us into space. we were getting close to launching a useful satellite, explorer 1 - which launched on january 31, 1958. the ussr had to beat that, so they launched sputnik 1 on october 4, 19

answer

procedural programming, object-oriented programming

explanation

procedural programming is a type of computer programming language that specifies a series of well structured steps and procedures   within its development period of time. it contains a systematic order of statements, functions and commands to complete a computational task or program. it is centered on creating procedures. while object oriented programming is a programming language that is centered on creating objects rather that actions and data rather than logic.. it has four principles which are inheritance, polymorphism, abstraction and encapsulation

find the sum of the two horizontal vectors and the sum of the two vertical vectors

isoceles right angled triangle