Ahandball player hits the ball with a mass of 0.25 kg. the ball travels at a velocity of 15 m/s for .75 s until it hits the wall.
what is the average acceleration of the handball

a. 20m/s^2
b 0.05m/s
c, 20m/s
d.0.05m/s^2

The solar panels used by mark function because of the photoelectric effect. light shines on the cells causing electrons to be ejected from the metal, which produces an electric current. at night on mars, no light will fall on the solar cells and no electric current will be generated. according to your notes, what type of light is typically needed to cause the photoelectric effect? a)visible b)ultraviolet c)infrared

What organization and environment is described above?

An electron in an x-ray machine is accelerated through a potential difference of 1.00 × 104 v before it hits the target. what is the kinetic energy of the electron in electron volts?