In which grade does physics begin to be taught in the United States?

True or false graphs must include scales that increase by the same amount

14. a body is projected with velocity vi from a.at the same time another body is projectedvertically upwards from point b withvelocity v2 lies vertically below the highestpoint. both the bodies collide thenv2÷v1is

Explain what will happen if decomposers were apsent from a forest ecoysystem.