Recent content by david12

help me out on this proble i am confuse a sport center is to be constructed.it consists of a rectangular region with a semicircle ach end .if the perimater of the room is to be a 500 meter running truck find the dimetion that will make the area as large as possible. i can find if the...

Here is another question.I try to get the answer but ... 1.A ball is trown vertically upward with an initial speed of 15m/s.then,2.2 s later ,A stone is thrown straight up (from the same initial height as the ball)with an initial speed of 21.3m/s. the acceleration of g=9.8m/s^2. How far...

Here is my question guys ...i guess you can help me out . 1.A basketball player achieves a hang time of 1.33 second in dunking the ball.the acceleration of gravity is 9.8m/s^2.what is vertical height will he attain.answer in m. here is what i did. Y=Y(inital) + v(inital)t + 1/2 gt^2...

I try my best to solve this problem but couldn't ...here is the question 1.the train starting rest leaves a station with a constant acceleration.at the end of 5.34 s,it is moving at 15.549m/s. what is the train displacement in the first 3.15 s of motion?answer in units of meter. I try in...

Homework Statement I try to drive distance formula which is S=vt+1/2at^2. I use velocity and acceleration formula to drive the distance formula but i couldn't get the distance formula.is there anyone know how to drive S=vt+1/2at^2. and how that came from in the first place . thank...