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pointintime
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Homework Statement
A rock is thrown vertically upward with a speed of 12.0 s^-1 m. Exactly 1.00 s later, a ball is thrown up vertically along the same path with a speed of 20.0 s^-1 m.
(a) At what time will they strike each other?
(b) At what height will the collision occur?
(c) Answer (a) and (b) assuming that the rder is reversed: the ball is trown 1.00 s before thr ock.
Homework Equations
X = Xo + Vot + 2^-1 a t^2
The Attempt at a Solution
I have no idea how to even start this problem
were the 1 subscripts are the first object that went off and the twos are the second object
t1 = t2 - 1.00s
plugged in
Xo + Vo1 t1 + 2^-1 a t1^2
Xo + Vo1 (t2 - 1.00 s) + 2^-1 a (t2 - 1.00)^2
solved for t2 found 1 second...