Velocity can be either positive or negative, depend- ing on the direction of the displacement. The time
interval, At, is always positive.

An object weigh 40n in air ,weigh 20n when submerged in water, and 30n when submerged in a liquid of unknown liquid density. what is the density of unknown of liquid?

The dot diagram represents the motion of the motorcycle as it moves from left to right

Which statement correctly describes the interaction between magnetic poles? north and south poles attract each other. north and south poles repel each other. two north poles will attract each other. two south poles will attract each other.