Phys 250 Midterm 1 questions
& answers
____________ are quantities that have magnitude and direction
(displacement, acceleration, force, momentum) - answer Vectors
_____________ are quantities that have magnitude only (speed,
distance, energy) - answer Scalars
Vectors and scalars can not be ____________ but they can be
_____________ together. - answer added, multiplied
Multiplying a vector by a ___________ scalar can change only it's
magnitude. - answer positive
Multiplying a vector by a _______________ scalar can change both
its magnitude and direction. - answer negative
________________ is the change is an objects position over time
while ____________ is the distance traveled within the time taken -
answer velocity, speed
________________ - is how an objects velocity changes with time -
answer acceleration
, __________________ is how an objects position changes over time
(final-intial) while ______________ is how far the object traveled
over time - answer displacement, distance
average velocity is the _____________ of the position vs. time graph
- answer slope
____________ are always non-negative - answer scalars
Graphically _________________ is the area between v and the x-axis
on the velocity vs. time graph. - answer displacement
Graphically _____________ is the area between a and the x-axis on
the acceleration vs time graph. - answer change in v
When an object gets faster A & V have ___________ signs, when it
gets slower they have _________ signs. - answer the same,
opposite
__________________ is the slope of the velocity vs. time graph. -
answer Acceleration
_____________ - is when an object is moving only under the
influence of gravity. - answer free fall
When an object is in free fall ___________________ in the kinematics
equations - answer sub g in for a
& answers
____________ are quantities that have magnitude and direction
(displacement, acceleration, force, momentum) - answer Vectors
_____________ are quantities that have magnitude only (speed,
distance, energy) - answer Scalars
Vectors and scalars can not be ____________ but they can be
_____________ together. - answer added, multiplied
Multiplying a vector by a ___________ scalar can change only it's
magnitude. - answer positive
Multiplying a vector by a _______________ scalar can change both
its magnitude and direction. - answer negative
________________ is the change is an objects position over time
while ____________ is the distance traveled within the time taken -
answer velocity, speed
________________ - is how an objects velocity changes with time -
answer acceleration
, __________________ is how an objects position changes over time
(final-intial) while ______________ is how far the object traveled
over time - answer displacement, distance
average velocity is the _____________ of the position vs. time graph
- answer slope
____________ are always non-negative - answer scalars
Graphically _________________ is the area between v and the x-axis
on the velocity vs. time graph. - answer displacement
Graphically _____________ is the area between a and the x-axis on
the acceleration vs time graph. - answer change in v
When an object gets faster A & V have ___________ signs, when it
gets slower they have _________ signs. - answer the same,
opposite
__________________ is the slope of the velocity vs. time graph. -
answer Acceleration
_____________ - is when an object is moving only under the
influence of gravity. - answer free fall
When an object is in free fall ___________________ in the kinematics
equations - answer sub g in for a
