A700 kg racecar slowed from 30 m/s to 15 m/s. what was the change in momentum?

What is the earliest point in the universe that we can observe? why can’t we see back further than this?

What is created when solids,liquids,an gases mix with one another

Juan created a chart to him study for a test. which headings best complete the chart? x: transparent objects y: opaque objects x: opaque objects y: transparent objects x: high frequency waves y: low frequency waves x: low frequency waves y: high frequency waves