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deaninator
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Homework Statement
Jack and Jill ran down the hill, Both started from rest and accelerated steadily. Jack accelerated at .25 m/s/s and Kill at .30 m/s/s. After running for 20 s, Jill fell down.
A) How far did Jill get before she fell? 60m
B) How far had Jack traveled when Jill fell? 50m
C)How fast was Jack running when Jill fell? 5 m/s
D) How long (to the nearest second) was it after Jill fell that Jack ran into her and broke his crown? ?
Homework Equations
V=Vo + at
X=1/2(Vo +V)T
X=VoT + 1/2at2
V2=Vo2 + 2ax
(If a 2 is after a letter then it means squared)
X=displacement
A=Acceleration
T=Tome
Vo=Initial Velocity
V=Velocity
The Attempt at a Solution
I just don't know how to figure D...please help.