ALOT OF POINTS What is the best description of the acceleration of an object? A: A runner travels 100 m in one minute.
B: A cars velocity changes from 25 m/s to 20 m/s in 5 seconds.
C: An airplane changes elevation from 10,000 ft to 5,000 ft.
D: A remote-controlled car speeds up from 0 m/s to 15 m/s.

Aspacecraft that renters the earth’s atmosphere drastically slows down. the amount of kinetic energy the spacecraft has as it reenters the earths atmosphere

Light from two different sources are incident upon the same side of a polarizing filter. light from one source is polarized with total intensity ip, while light from the other source is unpolarized with total intensity iu. as you rotate the polarizing filter through 360 degrees, the intensity of the transmitted light on the other side varies by a factor of 9. what is the relative intensity of the initial polarized source to the unpolarized source, or ip/iu?

Which of the following is a measure of the amount of light a star directly emits?               a.  luminosity    b.  intensity    c.  wavelength    d.  brightness