In an isolated system, a red ball of mass m moves to the right with speed v. It strikes a green ball, of mass 2m, which was initially stationary. After the collision, the red ball remains stationary. How does
the green ball move?

A. To the left, with speed v/2

B. To the right with speed 2v

C. To the right, with speed v/2

D. To the left with speed 2v

Ameter stick is pivoted at the 0.50-m line. a 3.0-kg object is hung from the 0.15-m line. where should a 5.0-kg object be hung to achieve equilibrium (the meter stick oriented horizontal and motionless)?

Which of the following correctly describes what happens when an atomic bomb explodes? small pieces of fissionable material are joined and form a body with a mass greater than the critical mass, the relative number of neutrons escaping decreases, and a chain reaction and explosion result. large pieces of fissionable matter are brought together quickly and form a body with a mass smaller than the critical mass, the relative number of escaping neutrons increases, and a chain reaction and explosion result.

What does si stand for,when referring to a system of measurement