When you use the scientific method to solve a problem, which procedure do you
follow?
a)find something scientists say is true and then ask questions about it.
b)identify something you think is true and then set out to prove it.
c)do an experiment and then ask questions about it.
-d) identify a question, make observations, create a hypothesis, and then set up an experiment to test the hypothesis.

Abasketball star covers 2.65 m horizontally in a jump to dunk the ball. his motion through space can be modeled precisely as that of a particle at his center of mass. his center of mass is at elevation 1.02 m when he leaves the floor. it reaches a maximum height of 1.90 m above the floor and is at elevation 0.910 m when he touches down again. (a) determine his time of flight (his "hang time"). (b) determine his horizontal velocity at the instant of takeoff. (c) determine his vertical velocity at the instant of takeoff. (d) determine his takeoff angle. (e) for comparison, determine the hang time of a whitetail deer making a jump with center-of-mass elevations yi = 1.20 m, ymax = 2.45 m, and yf = 0.750 m.

List and describe three ways that humans can change ecosystems and three ways that humans can protect ecosystems.

Arock, thrown straight up, takes 4.2 seconds to reach its max height (g=9.8m/s) what was the initial velocity? what was its maximum height?