A ball of mass 4 kg moving at 6 m/s collides with another ball of mass 6 kg moving at 4 m/s in the same direction. If the balls move together after the collision in the same direction, find their common velocity

The answer is 4 m/sec

Anybody planning on traveling to a spanish-speaking nation sometime in the next months or so have to make a program so that can make a dissent conversation in spanish or just to understand when folks talk to them due to the fact by the time your trip rolls around you must be conversationally fluent or rather near to it with the assist. hope this

Creo que es selva o isla es una parte de la tierra