A2kg marble is moving at 3 m/s when it strikes another 4kg marble moving in the opposite direction at -3 m/s. what will be the velocity of the 4kg marble after the collision of the 2kg marble's new velocity is -4 m/s. also state the direction of the 2kg marble after they hit.

How have the competing explanations' experiments on atoms affected the development of the atomic model?

Click the game tab at the bottom of the simulation and select level 1. (there is no seesaw balance for this part of the activity.) balance the first equation, and click check to see if you got it right. if you can’t balance it in the first try, you can try again. work through the five equations for level 1. click continue to go on to level 2, and later level 3. each level is more difficult than the one before. keep trying until all the equations are balanced. in one or two sentences, describe how you did in the balancing game. in a few more sentences, explain one strategy you learned for balancing more complex equations.

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.