5. Two balls with masses of 0.4 kg and 0.6 kg respectively are thrown in such a manner that they collide head-on. They stick together and move with common velocity. The initial velocity for each ball is 15 m/s. Calculate the velocity v. A. Zero B. - 3 ms? C. 6 ms! D. 9 ms​

Write the equation for momentum, first using symbols for the variables, then using words for the variables.

Within a pendulum, as potential energy decreases, energy increases. a. heat b. kinetic c. frictional d. gravitational

A1-lb collar is attached to a spring and slides without friction along a circular rod in a vertical plane. the spring has an undeformed length of 5 in. and a constant k =25 lb/ft. knowing that the collar is released from being held at a determine, the speed of the collar and the normal force between the collar and the rod as the collar passes through b.