Answer:
potential energy is stored energy...basically energy gathered from staying still so because the skater is in motion he has lost the potential energy and turned it into kinetic energy
Explanation:
Answer: A. Sediment
Eutrophication is a phenomena in which a water body gets enriched with minerals and nutrients frequently entered into water body due to run-off from the land, which facilitates dense growth of plants especially on the superficial layers of water body. Decaying organisms, fertilizers and pollution all add nutrients and minerals necessary for plant growth specifically remain floating on the superficial layers of water where plant growth takes place but sediments gets settled at the bottom of the water body, the minerals present in it remain settle at the bottom and hence, does not contribute to eutrophication.
To solve this problem, we make use of the equations of
motion:
vf^2 = v0^2 – 2 g h
vf = v0 – g t
h = v0 t – 0.5 g t^2
A. Finding for max height:
Max height occurs when vf = 0, therefore:
0^2 = 25^2 – 2 (9.8) h
h = 31.89 m
B. Finding for t:
t = t(up) + t(down)
vf = v0 – g t(up)
0 = 25 – 9.8 t(up)
t(up) = 2.55 s
h = v0 t(down) – 0.5 g t(down)^2
31.89 = 0.5 (9.8) t(down)^2
t(down)^2 = 6.51
t(down) = 2.55 s
so,
<span>t = 5.1 s</span>
Answer:3,1 and 2
Explanation:
When the students step out for another break three hour later, how has the location of Cygnus changed. The constellations Cygnus is low in the eastern part of the sky and the big dipper to locate Polaris is fairly high in the sky to the north