Technology is ___ science that makes ___ science useful and practical.

Spend time observing or thinking about events that involve matter and energy. which events can you explain? which events can’t you explain?

Explain what it means to view something from a frame of reference. provide an example that illustrates your explanation. (4 points)

Complete these sentences. if a roller coaster train has a potential energy of 1,500 j and a kinetic energy of 500 j as it starts to travel downhill, its total energy isj. once the roller coaster train gets closer to the bottom of the hill, its kinetic energy increases to 1,100 j, and its potential energy decreases to j. when the train reaches the bottom of the track and is traveling along the ground, its kinetic energy isj.