Phys 250 Midterm 1 Questions With Complete Solutions

____________ are quantities that have magnitude and direction (displacement, acceleration, force, momentum) correct answer: Vectors _____________ are quantities that have magnitude only (speed, distance, energy) correct answer: Scalars Vectors and scalars can not be ____________ but they can be _____________ together. correct answer: added, multiplied Multiplying a vector by a ___________ scalar can change only it's magnitude. correct answer: positive Multiplying a vector by a _______________ scalar can change both its magnitude and direction. correct answer: negative ________________ is the change is an objects position over time while ____________ is the distance traveled within the time taken correct answer: velocity, speed ________________ - is how an objects velocity changes with time correct answer: acceleration __________________ is how an objects position changes over time (final-intial) while ______________ is how far the object traveled over time correct answer: displacement, distance average velocity is the _____________ of the position vs. time graph correct answer: slope ____________ are always non-negative correct answer: scalars Graphically _________________ is the area between v and the x-axis on the velocity vs. time graph. correct answer: displacement Graphically _____________ is the area between a and th