Answer:
velocity of Judy and dog after collision will be 0.7272 m./sec
Explanation:
Mass of the Judy [tex]m_1=45kg[/tex]
As the Judy is standing so initial velocity of Judy [tex]v_1=0m/sec[/tex]
Mass of dog Atti [tex]m_2=10kg[/tex]
Velocity of Atti [tex]v_2=4m/sec[/tex]
We have to fond the velocity of Judy and dog after collision
Now according to conservation of momentum
Momentum before collision is equal to momentum after collision
So [tex]m_1v_1+m_2v_2=(m_1+m_2)v[/tex]
[tex]45\times 0+10\times 4=(45+10)\times v[/tex]
v = 0.7272 m/sec
So velocity of Judy and dog after collision will be 0.7272 m./sec
