The particle x is: a) an electron b) a proton c) a neutron

State one advantage and one disadvantage of using a plane mirrior as a driving mirrior

Imagine you are standing in the antarctic during the southern hemisphere summer. the sky is clear and blue. there are no clouds in the sky. your shadow is cast on the icy ground. what is the color of the shadow?

If an athlete runs once around a track, back to the starting line, her average velocity is zero. true or false?