Look at the figure. Which statement is true?

∆TRK ≅ ∆TUK

∆TRK ≅ ∆TKU

∆KTR ≅ ∆KUT

∠KTR ≅ ∠TUK

The first statement on the list is the true one.

explanation:

as the height from which the ruler was dropped increased, the speed of the ruler at ryan's hand increased.

the chart show the masses and velocities of two colliding objects that stick together after a collision.

according to the law of conservation of momentum, the momentum of the object after the collision is  

answer

1,500

kg • m/s.