Thursday

August 21, 2014

August 21, 2014

Posted by **Thomson** on Thursday, March 14, 2013 at 4:10pm.

A 2m length of board rests with one end on the floor and the other end on a small stack of bricks. A baseball is rolled up the board and back down again in a total of 4 seconds. The farthest the baseball reached on the board was 130cm.

Draw a graph of this. [distance time]

---

I would appreciate it if someone could tell me the general shape or link me to a graph made on a graphing site.

- math -
**Steve**, Thursday, March 14, 2013 at 4:48pmwell, it's a parabola, with

y(0) = 0

y(4) = 0

so we know that the max height is reached at y=2.

y(2) = 130

so, the vertex is at (2,130)

y(t) = -a(t-2)^2 + 130

Now, we know that y(0) = 0, so

0 = -a(4)+130

a = 130/4

y(t) = -130/ (t-2)^2 + 130

visit http://rechneronline.de/function-graphs/

and type in

-130/4 * (x-2)^2 + 130

set the x interval to 0,4

and y to 0,150

and you will see the graph

- math -
**Thomson**, Thursday, March 14, 2013 at 4:51pmThank you.

**Related Questions**

math - NOTE: this is for advanced functions, NOT physics A 2m length of board ...

Math (need formula) - I would be very appreciative if someone could provide me ...

Physics - In a room that is 2.69 m high, a spring (unstrained length = 0.28 m) ...

physics - In a room that is 2.78 m high, a spring (unstrained length = 0.30 m) ...

physics - In a room that is 2.13 m high, a spring (unstrained length = 0.30 m) ...

Physics - You stand at the end of a long board of length L. The board rests on a...

Physics - A sturdy wooden board, 4.0 meters long and with a mass of 32 kg, rests...

Momentum and impulse - You stand at the end of a long board of length L. The ...

physics - A 59 kg diver stands at the end of a 32 kg springboard, the spring ...

physics - A thin 2 kg box rests on a 6 kg board that hangs over the table. the ...