Friday

January 30, 2015

January 30, 2015

Posted by **Hannah** on Monday, September 13, 2010 at 11:33pm.

- Physics -
**Alura**, Monday, September 13, 2010 at 11:43pmI have just recently had to answer a very similar question. My prof. has given me the two general eqns to use:

Y(final)=Y(initial)+V(initial)((T(final)-T(initial))+1/2a(T(final)-T(initial))^2

and

V(final)=V(initial)+a(T(final)-T(initial))

From there, write down your knowns and derive more specific eqns from the general ones... Very vague i know...good luck

- Physics -
**drwls**, Monday, September 13, 2010 at 11:44pmY1 = -(g/2) t^2

Y2 = -33(t-2) -(g/2)((t-2)^2

Set Y1 - Y2 and solve for t.

Use that t to compute Y at that time.

- Physics -
**Hannah**, Tuesday, September 14, 2010 at 3:28pmwhen i solve for t I get an extremely small number like .1998. I don't think I am setting up the problem right or something.

**Answer this Question**

**Related Questions**

physics - At t = 0, a stone is dropped from a cliff above a lake; 2.1 seconds ...

Physics 1 - At t = 0, a stone is dropped from a cliff above a lake; 1.3 seconds ...

physic - a stone A is dropped from the top of tower and B is thrown downward ...

physics - A boy drops a stone-A, down from a cliff 480 meters high, next he ...

Physics - a stone is dropped from a 75m building. when a stone has dropped 15m, ...

physics - A stone falls from rest from the top of a cliff. A second stone is ...

Physics - Help imediately please very urgent! A stone is dropped from a cliff ...

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 ...

Physics - A stone is thrown from a 50m high cliff and lands 5 seconds later, 40m...