1. An object of mass mi=3kg, moving with a velocity of 20m/s in the positive x- direction, collides with and sticks to an object of mass m2=2kg moving with a velocity of 10 m/s in the negative x-direction. What the final velocity of the composite system

Which statement about covalent bonds is true

An incident ray through the focal point of a spherical mirror will: reflect through the center of curvature. reflect back through the focal point. reflect parallel to the principle axis. reflect the same direction as the incident ray.

Two students, each riding bicycles, start from the same apartment building and ride to the same building on campus, but each takes a different route. the first student rides 1100 m due east and then turns due north and travels another 1430 m before arriving at the destination. the second student heads due north for 1930 m and then turns and heads directly toward the destination.at the turning point, how far is the second student from the destination?