A railroad engine coasting at 10 km/h runs into a stationary wagon. The engine weighs 5 times as much as the wagon. Assuming both of them couple together, how fast are they moving after the collision? Solve the problem and show all work.

When a neutral charge, comes into contact with a positive charge they repel each other nothing happens the neutral charge becomes negative they attract each other

How is coal extracted from mountaintop removal mines? a. dynamite is used to create underground tunnels where miners go to extract the coal. b. dynamite is used to break apart rocks and then draglines are used to remove the broken rock and reach the coal. c. coal in mountaintops is extracted by digging strips in the landscape to reach the coal. d. placer deposits in mountain river bottoms are removed by

A2k pendulum has a speed of 1 m/s at a height of 1/2 meter