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Problem
Problem
The ends of a rod
A
B
AB
A
B
which is 5 m long moves along two grooves
O
X
OX
O
X
,
O
Y
OY
O
Y
which are at right angles. If
A
A
A
moves at a constant speed of
1
2
m/s
\frac{1}{2} \text{ m/s}
2
1
m/s
, what is the speed of
B
B
B
, when it is 4 m from
O
O
O
?
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