Find the velocity of mass mB after the collision. Assume no outside force acts on the two masses during the collision. Enter the x, y, and z components of the velocity separated by commas. Express your answer to two significant figures.

The boy of mass 30 kg is at r1= 2 meters from the fulcrum. of the girl is 45 kg, at what r2 must she sit so that they are balanced ?

Complete the statement about memory improvement. ( )involves organizing and breaking down information into easier groups to expand capacity. rehearsal is the verbal repetition of information. these techniques are especially important for the improvement of ( ) memory.

For the car in the picture ,in which direction is the normal force? -into the screen -down -out of the screen -up