Question

Two shuffleboard disks of equal mass, one of which is orange and one of which is yellow, are involved in an elastic collision. The yellow disk is initially at rest and is struck by the orange disk, which is moving initially to the right at 5.00 m/s. After the collision, the orange disk is at rest. What is the velocity of the yellow disk after the collision

Answer 1

v₁ = 5 m/s

Step-by-step explanation:

We can use the law of conservation of momentum here:

`m_1u_1+m_2u_2=m_1v_1+m_2v_2`

where,

m₁ = m₂ = m = mass of each disk

u₁ = initial speed of yellow disk = 0 m/s

u₂ = initial speed of orange disk = 5 m/s

v₁ = final speed of yellow disk = ?

v₂ = final speed of orange disk = 0 m/s

Therefore,

`m(0\ m/s+5\ m/s)=m(v_1+0\ m/s)\\\\`

v₁ = 5 m/s