A tennis ball moving with velocity v1 hits a stationary tennis ball. The collision is inelastic and the two balls start traveling together. What is the velocity of the two tennis balls moving together? A) 2v1 B) 1/2 v1 C) 1/3 v1 D) v1

Two rigid transformations are used to map δhjk to δlmn. the first is a translation of vertex h to vertex l. what is the second transformation? a reflection across the line containing hk a rotation about point h a reflection across the line containing hj a rotation about point k