Answer B is the correct pair.
Potential energy is first transformed into kinetic energy as she pedals, then gravitational as she coasts down the hill.
Answer:
b
Explanation:
Brownian motion is the random movement of particles in a fluid due to their collisions with other atoms or molecules. ... Brownian motion takes its name from the Scottish botanist Robert Brown, who observed pollen grains moving randomly in water. He described the motion in 1827 but was unable to explain it.
It would take 500 seconds, because 2500 divided by 5 is 500