Todd and Angela set up a ramp and released several cars from the top. If Todd and Angela want to
determine the average speed of their cars down the ramp, what information do they need?

Copper, silver, aluminum, cobalt, chromium, mercury 

Non metal is an element or substance that is not a metal metal is a solid material that is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivitymetalloid is an element (e.g., germanium or silicon) whose properties are intermediate between those of metals and solid nonmetals. they are electrical semiconductors.

Do you have any options for this question?

Ive had this before. your answer would be d. hope this ya