A(n) 1.3 kg mass sliding on a frictionless surface has a velocity of 7.6 m/s east when it undergoes a one-dimensional elastic collision with an unknown mass that is initially at rest. After the collision, the velocity of the 1.3 kg is 1.1 m/s west. What is the unknown mass?

that would be b i just took the test : )

the journeys of marquette, joliet and la salle a) new france expand.

all three of these explorers explored the midwest and the area around the great lakes, which they subsequently claimed for france.

this was a big portion of territory and expanded new france which before then only consisted of quebec province in northeastern canada