Help please! A car is moving down a freeway in a straight line at a constant rate 10m/s for 9.8 s. It’s acceleration is?? My options are
9.8 m/s^2
9.8 m/s
Zero
32.0 m/s
11.0m/s^2

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 of the following is not a characteristic of s waves? a. travel slower than p waves. b. cannot be detected in locations more than 105° from an earthquake’s epicenter. c. travel through solids and liquids. d. only affect coastal regions.

The softest and hardest minerals are: softest hardest