A 7 kg ball of clay moving a 4 m/s to the right crashes into a not moving 5 kg ball of clay. The balls of clay stick together.
The total momentum after the collision is __.
kg m/s.

Explanation:

28kgm/s

that is the answer

momentum is conserved

a charge 3q is at the origin, and a charge −2q is on the positive x axis at x=a. part a where on the x-axis would you place a third charge so it would experience no net electric force? enter an expression for the exact answer, which will involve a square-root sign. (do not enter an approximate decimal answer.)

compass can be used day and night, cloudy or sunny