PLEASE HELP What causes an electric charge?

A. The movement of electrons due to a difference in electric potential energy

B. The movement of protons due to a difference in electric potential energy

C. The movement of neutrons due to a waterfall

D. The movement of electrons due to kinetic energy

what is the speed of a softball that travels 20m in 2secs

speed = 20/2 = 10 m/s

we're given that v₀ = 0 and a = 5.4 m/s². therefore, since v = at + v₀ for constant acceleration the equation for velocity is

after 28s,

m/s

which i would round to 150 m/s as my final answer

magnets not strong enough

explanation: