Answer:
v₁ = 1.78 m/s
Step-by-step explanation:
We can use the law of conservation of momentum here, as follows:
![m_1u_1 + m_2u_2 = m_1v_1 + m_2v_2](https://img.qammunity.org/2022/formulas/physics/high-school/j84pxj8xpla75szzp8kb9iu16c8wspcdff.png)
where,
m₁ = mass of first object = 4.5 kg
m₂ = mass of second object = 6.2 kg
u₁ = initial speed of first (smaller) mass = 16 m/s
u₂ = initial speed of second (larger) mass = 0 m/s
v₁ = final speed of first (smaller) mass = ?
v₂ = final speed of second (larger) mass = 10 m/s
Therefore,
![(4.5\ kg)(16\ m/s)+(6.2\ kg)(0\ m/s)=(4.5\ kg)(v_1)+(6.2\ kg)(10\ m/s)\\70\ kgm/s - 62\ kgm/s = (4.5\ kg)v_1\\\\v_1 = (8\ kgm/s)/(4.5\ kg)\\\\](https://img.qammunity.org/2022/formulas/physics/high-school/nus8wud7yzvv43y23y2r5u2udi1z0c7y6x.png)
v₁ = 1.78 m/s