Saturday

April 19, 2014

April 19, 2014

Posted by **Oscar Zambrano** on Thursday, November 3, 2011 at 7:33am.

- Physics -
**Henr =y**, Friday, November 4, 2011 at 11:08pmd = Vo*t + 4.9t^2 = 15,

0 + 4.9t^2 = 15,

t^2 = 3.06,

t = 1.75s. = Time to fall 15m.

Therefore, the 1st stone had a 1.75s

headstart:

d1 = 0 + 4.9t^2 = 75

t^2 = 15.31,

t1 = 3.91s.

t2 = 3.91 - 1.75 = 2.16s.

d2 = Vo*t + 4.9t^2 = 75,

2.16*Vo + 4.9(2.16)^2 = 75,

2.16Vo + 22.9 = 75,

2.16*Vo = 75 - 22.9 = 52.1,

Vo = 24.1m/s. = Initial velocity of 2nd stone

- Physics -
**Henry**, Friday, November 4, 2011 at 11:15pmpost

**Related Questions**

physics - A stone is dropped from a 75 m high building. when this stone has ...

physics - A stone is dropped from a 75 m high building. when this stone has ...

calculus - use to postion function s(t) = -4.9t^2 + vt + s for free-falling ...

calculus - use to postion function s(t) = -4.9t^2 + vt + s for free-falling ...

physics - A stone is dropped from the roof of a tall building. A person measures...

physics - A stone is dropped from the roof of a high building. A second stone is...

Physics - A stone is dropped from the roof of a high building. A second stone ...

physics - a stone is dropped from the rooftop of a building 60.0 m high.how many...

Physics - A stone, initially at rest, is dropped from the top of a building. On ...

physic - A stone is dropped from the roof of a high building. A second stone is ...