Story 1
• little red riding hood set out for grandmother's cottage at a
good walking pace.
• she stopped briefly to talk to the wolf.
. she walked a bit slower because they were talking as they walked
to the wild flowers.
. she stopped to pick flowers for quite a while.
• realizing she was late, red riding hood ran the rest of the way to
grandmother's cottage.
position
time

Why is the energy that results from a roller coaster's position at the top of a hill referred to as potential energy?

Emmy kicks a soccer ball up at an angle of 45° over a level field. she watches the ball's trajectory and notices that it lands, two seconds after being kicked, about 20 m away to the north. assume that air resistance is negligible, and plot the horizontal and vertical components of the ball's velocity as a function of time. consider only the time that the ball is in the air, after being kicked but before landing. take "north" and "up" as the positive ‑ and ‑directions, respectively, and use ≈10 m/s2 for the downward acceleration due to gravity.

Ais not a mixture. colloid compound suspension solution