A ball travels 5 m in the positive direction, hits a wall and rebounds in the negative direction, and finally comes to rest 8 m behind its original position. If the motion of the ball takes 10 s, so its average velocity is:

a.metals can become magnetic if they have many spinning electrons that create magnetic fields.d.only some metals are attracted by magnets; these metals are called ferromagnetic.

d.wrapping an insulated wire around a metal with ferromagnetic properties and applying an electric current.

distance = 150m

displ = root (50 ^2 + 100^2)

root(2500+10000)

root 125000