A free falling object starts from rest. After 3 seconds, it will have a speed of about

A10.0 kg cart and a 15kg cart are locked together with a compressed spring between them. they are then released so that the spring pushes the two carts apart. the 10.0 kg cart is moving at 4.5 m/s afterward. how fast is the 15kg cart moving? 3.0 m/s 2.0 m/s 4.5 m/s 5.0 m/s

Difference between series and parallel circuits

You notice the birds sitting on the electrical wires which of the following explain why the birds don't get shocked