A 8 kg ball is moving at a speed of 12 m/s. It collides with 2 balls simultaneously, each having a mass of 3 kg. What is the final velocity of EACH BALL?

What are two different ways you could find the value of a? explain these methods.

If forces acting on an object are unbalanced. true or false

Aresistor with an unknown resistance is connected in parallel to a 9 ω resistor. when both resistors are connected in parallel to an emf source of 21 v, the current through the unknown resistor is measured with an ammeter to be 4 a. what is the resistance of the unknown resistor? answer in units of ω.