Recent content by ihopeican

I came up with -0.8333333333. I got this from thinking the maximum value is just the turning point (Ie: -b/2a)

Question: Hello, the question is to find the MAXIMUM VALUE of -3x^2-5x+1=0. Attempt: I tried to enter this into my calculate in Polynomial and got two values of x: x=-1.85 and x=0.1804 Thankyou! See following post for attempted answer.

Hello, 1/2mv^2/t ?

Hello, i thought maybe mgh and mgh/t? 70x9.8x10? 700x9.8x(20)/5

Homework Statement 1.) A 70kg boy runs as fast as he can up a flight of stairs which has vertical height of 10metres. He achieves this in 8 seconds. Calculate the average rate of energy transfer into gravitational potential energy that must have occurred. 2.) A700kg car traveling at 20ms-1...

Hello, I got 11.47 for the first one (1.a). I got 4.5 for 1b but i don't think this one is right. i did 2x-9.8x11.25 and then did the square root of that. For 1.c i am not sure with this one so some help would be much appreciated. For 2.a) i got 39.6 For 2.b) I got -27.85 Thankyou...

can anyone confirm some answers for me so i know if I am right for questions 1,abc and question 2

Homework Statement 1.) Astone is thrown upwards with a speed of 15ms-1 a.) how high does it reach b.)with what speed does it hit the ground c.)how long does it spend in flight Homework Equations 2as=ut+1/2at^2 v=s/t The Attempt at a Solution Well i am not sure what initial or...

hi there, i plan on becoming an astrophysicist/astronomer/cosmologist and recentley started looking for basic information into astronomy which i should know. i was wlndering if i am right about how stars are formed. i will try to put down how i understand: in the universe gas clouds could...

hi, just wondering which branch of physics holds the most mathematics. because i love finding and using mathematic formulas. etc. Thankyou, Bye.

Hi thanyou for the excellent responses. I have some good news that i moved up to the second top class in advanced mathematics and now can do geometry and trigonometry and then calculus ^^ Thankyou very much

Hi there, I am currentley in grade 10 and am having trouble getting into the highest maths which is geometry and trigonometry which in partnership with introductory calculus goes into Calculus in year 12. I have gotten into introductory calculus but I am quite positive that ill need calculus...

hi there, i am from Australia. also in the physics unit this year we did optics, nuclear physics(fission/fusion) Newtons laws, and energy and change(1/2MV^2=MGH) thankyou

hi there, thankyou so much for supporting me. i am going to try to have ameeting with my maths teacher to see how i can achieve it but because of you replies i know that it isn't the end if i can't do calculus within weeks because i can try in university. I was just wondering if calculus in...