15. Describe how the speed of sound would change as it first travels through a
Solid:
Liquid:
Gas:
(2pts)

Two trains leave a station at the same time, train a travels at a constant speed of 16 m/s. train b starts at 8.0 m/s but accelerates constantly at 1.0 m/s squared. after 10.0 seconds, which train has the greater speed?

Which are causes of mechanical weathering? (check all that apply) a. acid rain b. plant growth c. animal actions d. carbon dioxide e. pressure release i chose b & e and got the question wrong.

Which of the following forces require physical contact? tension air resistance friction magnetic force applied force