Tag Archives: math

Is it normal for a 15 year old to cry about petty insults, set RC cars on fire, etc….?

Some of you might remember I’ve posted about this guy before. He’s a fresshie’ in my math class and today he started crying because he didn’t know how to awnser a math question on the board! Then some kid on the bus said fresshies’ suck so he started crying there! He also follows me around and talks about bizzare things like seting things on fire and stealing trucks! Like today he was rambling on about how he sets his RC cars on fire and watches the batteries explode! And every time a construction worker drives a cart by (our school’s under reconstruction) he says he want’s to steal it! Is this common? I don’t know anyone else like this but do you?
(Also today he was sitting nxt to me and everytime he got up or down he touched my leg! I don’t think he’s gay, but I don’t know!)
By the way, do you know how I can get ride of him without hurting his fellings?
(Anything the SLIGHTEST bit rude will make him cry, so DON”T suggest that!)
Well, it’s not just batteries. He seems to alaways be talking about dowsing something in gasoline and igniting it! I don’t know if he auctually does everyhting he does, I get the impression that he just says he does it cause’ he thinks it will make him fit in more and fell tougher!

Do you have the math skills to solve this? I got it on a test.?

A model rocket is launched straight upward with an initial speed of 46 m/s. It accelerates with an constant upward acceleration of 2.21 m/s^2 until its engines stop at an altitude of 160.7 m.

What is the maximun height reached by the rocket?

How long after lift-off does it maximum height?

How long is the rocket in the air?
m/s is meter per second.
m/s^2 is meter per second squared.
The starting point is ground level.
Bob. I’m not talking about the size of the model rocket.
By “How long is the rocket in the air?”, I obviously mean how much TIME it’s in the air.

More help and i thank you..math…?

A model rocket is shot into the air and its path is approximated by hI=-5t²+30t, where h is the height of the rocket above the ground in metres and t is the elapsed time in seconds

1.draw a diagram that models this situation
2.when will the rocket hit the ground
3.what is the maximum height of the rocket

thanks again. also if you have some tips on sites that could help me with this, i’d appreciate it…

I need help with this math question?

The height h (in feet), of a rocket , t seconds after it takes off can be modeled by -2t^(2)+12t+14=h

After how many seconds will the rocket have height of 32?

How many seconds after take off will the rocket come back to the ground?

Math Help! Analyze graphs of quadratic functions.?

The height h (in feet) of a rocket t seconds after it leaves the ground is modeled by the equation h(t)= -16t²+48t+15. Write this equation in vertex form and find the maximum height reached by the rocket.

math help……….. terminal velocity?

this is the question i need an answer….

The formula h=-16t^2+vt models the height of a model rocket, were “h” is the height in meters, “t” is the time in seconds and “v” is the initial vertical velocity in meters per second. If the model rocket is fired at an initial vertical velocity of 80 meters per second, will the rocket ever reach a height of 88 meters? Justify you answer.