An ideal simple machine is one that... Select one:
a. conserves force.
b. conserves distance.
c. conserves work.
d. conserves velocity.

In what direction does the medium move relative to the direction of the wave? explain.

Astudent creates a model of a closed ecosystem by filling a glass tank half full with water, then adding 10 snails and two small aquatic plants. the next day, all the snails are dead. what is the most likely cause of their death?

Acar traveling at 22 m/s starts to decelerate steadily. it comes to a complete stop in 15 seconds. what is it’s acceleration?