An 80 kg hockey player is skating at 4.1 m/s when an 85 kg hockey player from
another team, moving in the same direction at 5.5 m/s, hits him from behind. The
two becoming tangled up together and continue in a straight line. Find the
velocity of the two hockey players after they become attached.

Idon’t quite understand this problem

Question 11 of 13 (1 point) jump to question: a stairway, ladder, or ramp must be present in excavations in which of the following situations? a. all trenches must have access/egress b. the trench is more than 15 feet wide but only 1 ½ feet deep c. the trench is more than 4 feet deep and the devices must be within 25 feet of all workers

Suppose that f : rn → rm and that a ∈ k, where k is a connected subset of rn . suppose further that for each x ∈ k there exists a δx > 0 such that f(x) = f(y) for all y ∈ bδx (x). prove that f is constant on k; that is, f(x) = f(a) for all x ∈ k