A Car accelerates from 4 m/s to 16 m/s in 4 seconds. What is the car's acceleration?
O 12 m/s^2
3 m/s^2
4 m/s^2
O 1 m/s^2

When many atoms are split in a chain reaction, a large explosion occurs. this is an example of what type of energy conservation

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

Which of the following conditions lead you to see an absorption line spectrum from a cloud of gas in interstellar space? the cloud is extremely hot. the cloud is visible primarily because it reflects light from nearby stars. the cloud is cool and lies between you and a hot star. the cloud is cool and very dense, so that you cannot see any objects that lie behind it.