At a certain point along the path in projectile motion, the projectile has a velocity v with arrow whose scalar components are vx = +30 m/s and vy = +40 m/s. as the projectile moves along the path, what would be its minimum speed?

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

What is the increase in density of a medium due to wave travel?

Astudent pushes a 60-n block across the floor for a distance of 10 m. how much work was done to move the block