PHY 111 MIDTERM EXAM QUESTIONS
AND ANSWERS 100% SOLVED
Which variable is generally placed on the horizontal axis when creating a graph? -
ANSWER-indep
Which type of error analysis is most appropriate when comparing two measured
values? - ANSWER-% diff
A vector measurement must have which of the following? - ANSWER-magnitude and
direction
Which of the following best describes speed? - ANSWER-includes magnitude but not
direction
How many meters are in 3.4 megameters? - ANSWER-106 m = 1 Mm
(3.4 Mm)(106 m / 1 Mm) = 3.4x106 m
location of an object at any given point in time
always relative to some predetermined zero point - ANSWER-position
object's total amount of travel during a particular motion
indep of direction - ANSWER-distance
diff b/t final position and initial position of an object after travel has occurred
affected by direction - ANSWER-displacement
Distance and displacement are also good examples of - ANSWER-vector and scalar
measures
measurement in which direction is not considered
mass, volume, and speed
direction
energy - ANSWER-scalar measures
any type of measurement that has both a magnitude (a number value) and a direction
displacement
velocity
direction can be given in cardinal coordinates (N, S, E, W) - ANSWER-vector
A particular position-time graph is linear with a negative straight-line slope. This means
that the object - ANSWER-is moving backwards
, The absolute value of the area under a velocity-time graph is equal to which of the
following? - ANSWER-distance
Which of the following is an example of a vector measurement? - ANSWER-velocity
Which of the following correctly describes an object moving with constant velocity
motion? - ANSWER-object travels same distance each second
rate of change of velocity - ANSWER-acceleration
the position-time graph of that object will form part of a top- or bottom-opening parabola.
The slope of the position-time graph at a particular moment in time is equal to the
velocity at that time
The velocity-time graph for the object will be linear. The slope of the velocity-time graph
at a particular moment in time is equal to the acceleration at that time. The area under
the velocity-time graph can be used to solve for the distance (sum the absolute values
of all the areas) or the displacement (sum the values of all the areas) of that object -
ANSWER-object experiences constant acceleration
A student throws a ball straight up into the air. Which of the following statements
concerning the velocity and acceleration of the ball when it is at its maximum height is
most accurate? - ANSWER-velocity is 0 and acceleration in non-zero
A student examines a particular position-time graph and notes that the graph forms a
complete downward opening parabola. Which of the following correctly describes the
motion of the object? - ANSWER-object moves forward getting slower and then
backwards getting faster
study of motion in two directions at the same time—generally vertical and horizontal.
The most important thing to remember is that the two components of motion are
completely independent from one another. - ANSWER-projectile motion
A student fires a bullet horizontally from a gun. At the instant the bullet leaves the barrel
of the gun, a second student drops an identical bullet from the same height. Which
bullet (fired or dropped) will hit the ground first? Explain your answer. (Air resistance is
negligible.) - ANSWER-The horizontal movement of the fired bullet is independent of the
vertical movement. In the vertical direction:
y = ½ at2 + vot + yo
Both bullets start and end at the same vertical position and experience the same
acceleration due to gravity. Both objects start with an initial vertical velocity of zero (the
starting velocity of the fired bullet is horizontal and is thus independent of the vertical
AND ANSWERS 100% SOLVED
Which variable is generally placed on the horizontal axis when creating a graph? -
ANSWER-indep
Which type of error analysis is most appropriate when comparing two measured
values? - ANSWER-% diff
A vector measurement must have which of the following? - ANSWER-magnitude and
direction
Which of the following best describes speed? - ANSWER-includes magnitude but not
direction
How many meters are in 3.4 megameters? - ANSWER-106 m = 1 Mm
(3.4 Mm)(106 m / 1 Mm) = 3.4x106 m
location of an object at any given point in time
always relative to some predetermined zero point - ANSWER-position
object's total amount of travel during a particular motion
indep of direction - ANSWER-distance
diff b/t final position and initial position of an object after travel has occurred
affected by direction - ANSWER-displacement
Distance and displacement are also good examples of - ANSWER-vector and scalar
measures
measurement in which direction is not considered
mass, volume, and speed
direction
energy - ANSWER-scalar measures
any type of measurement that has both a magnitude (a number value) and a direction
displacement
velocity
direction can be given in cardinal coordinates (N, S, E, W) - ANSWER-vector
A particular position-time graph is linear with a negative straight-line slope. This means
that the object - ANSWER-is moving backwards
, The absolute value of the area under a velocity-time graph is equal to which of the
following? - ANSWER-distance
Which of the following is an example of a vector measurement? - ANSWER-velocity
Which of the following correctly describes an object moving with constant velocity
motion? - ANSWER-object travels same distance each second
rate of change of velocity - ANSWER-acceleration
the position-time graph of that object will form part of a top- or bottom-opening parabola.
The slope of the position-time graph at a particular moment in time is equal to the
velocity at that time
The velocity-time graph for the object will be linear. The slope of the velocity-time graph
at a particular moment in time is equal to the acceleration at that time. The area under
the velocity-time graph can be used to solve for the distance (sum the absolute values
of all the areas) or the displacement (sum the values of all the areas) of that object -
ANSWER-object experiences constant acceleration
A student throws a ball straight up into the air. Which of the following statements
concerning the velocity and acceleration of the ball when it is at its maximum height is
most accurate? - ANSWER-velocity is 0 and acceleration in non-zero
A student examines a particular position-time graph and notes that the graph forms a
complete downward opening parabola. Which of the following correctly describes the
motion of the object? - ANSWER-object moves forward getting slower and then
backwards getting faster
study of motion in two directions at the same time—generally vertical and horizontal.
The most important thing to remember is that the two components of motion are
completely independent from one another. - ANSWER-projectile motion
A student fires a bullet horizontally from a gun. At the instant the bullet leaves the barrel
of the gun, a second student drops an identical bullet from the same height. Which
bullet (fired or dropped) will hit the ground first? Explain your answer. (Air resistance is
negligible.) - ANSWER-The horizontal movement of the fired bullet is independent of the
vertical movement. In the vertical direction:
y = ½ at2 + vot + yo
Both bullets start and end at the same vertical position and experience the same
acceleration due to gravity. Both objects start with an initial vertical velocity of zero (the
starting velocity of the fired bullet is horizontal and is thus independent of the vertical
