Answer :
Answer:
99mm/s
Explanation:
Please see attachment for step by step guide

Answer:
The velocity of jaw is 149.94 mm/s
Explanation:
Here α = θ
The total length in x-axis is:
[tex]x=7(\frac{L}{2}sin\frac{\alpha }{2} )=\frac{7}{2} Lsin\frac{\alpha }{2}[/tex]
[tex]v=\frac{7}{2} L*\frac{\beta }{2} cos\frac{\alpha }{2}[/tex]
The total length in y-axis is:
[tex]y=Lcos\frac{\alpha }{2}[/tex]
The velocity of jaw is:
[tex]v=\frac{7}{2} (\frac{2u}{sin\frac{\alpha }{2} *2} )cos\frac{\alpha }{2} =\frac{7}{2} ucot\frac{\alpha }{2} =\frac{7}{2} *28*cot\frac{49}{2} =149.94 mm/s[/tex]