Adolescents require fewer hours of physical activity than adults. Please select the best answer from the choices provided.

t
f

fgravity=10x10=100n case 1

fgravity=30x20=600n case 2

6 times more

d. air pressure decreases as altitude increases.

molecules are free to separate from each other and will take on the shape of the container. molecules move completely at random and high speeds. they vibrate in a fixed position and do not move around much. molecules expand to the edge of their container.

b. false

explanation:

suppose a rock in free fall is dropped off a cliff. after falling for 5 seconds, its speed would not be 100 m/s.