holden is trying to determine the velocity of his race car. He went 20 meters east, turned around , and went 40 meters west. his car was 20 meters from the starting line. this took 5 seconds. what is the cars average velocity?

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

Which diagram correctly demonstrates the various forces acting on a ball moving horizontally with some speed?

If a tank filled with water contains a block and the height of the water above point a within the block is 0.8 meter, what is the pressure at point a?