A Radi, HafezO Rasmussen, John2020-02-152020-02-152013Print ISBN 978-3-642-23025-7Online ISBN 978-3-642-23026-4https://doi.org/10.1007/978-3-642-23026-4_2https://t.ly/GZnPEMSA Google ScholarWhen a particle moves in a straight line, we can take its motion to be positive in one specific direction and negative in the other. However, when this particle moves in three dimensions, plus or minus signs are no longer enough to specify the direction of motion. Instead, we must use a vector.enUnit VectorDisplacement VectorCross ProductVector ProductResultant VectorBook chapterhttps://doi.org/10.1007/978-3-642-23026-4_2