PHYSICS FINAL EXAM WITH 100%
CORRECT ANSWERS { GRADED A+}
What is the speed of an object at rest? - ✔✔0.0 m/s
Which of the following is an equation for average velocity? - ✔✔Vavg = change
in distance (x) / change in time (t)
Which of the following situations represents a negative displacement? (Assume
positive position is measure vertically upward along a y-axis.) - ✔✔A cat jumps
from a tree limb to the ground.
Which of the following units is the SI unit of velocity? - ✔✔Meter per second,
m/s
In the graph above, what is the correct description of any location to the left of the
zero? - ✔✔Negative position
In the graph above, a toy rolls from +3 m to +5 m. Which of the following
statements is true? - ✔✔Xi = +3m
,(Initial distance = +3m)
Suppose you are given a position versus time grap. The slope of a line drawn
tangent to a point on the curve of this graph describes what quantity? -
✔✔Instantaneous velocity
According to the graph above, during which interval is the cat at rest? - ✔✔5.0 -
10.0 s
According to the graph above, the cat has the fastest speed during which interval? -
✔✔10.0 - 15.0 s
According to the graph above, during which interval does the cat have the greatest
positive velocity? - ✔✔0.0 - 5.0 s
Which of the following line segments on a position versus time graph is physically
impossible? - ✔✔A vertical line
Acceleration is defined as - ✔✔The rate of change of velocity
Which of the following is an equation for acceleration? - ✔✔Acceleration =
change in velocity (v) / change in time (t)
What is the SI unit of acceleration? - ✔✔m/s^2
,If you know the acceleration of a car, its initial velocity, and the time interval,
which of the following can you predict? - ✔✔All of the above
When a car's velocity is positive and its acceleration is negative, what is happening
to the car's motion? - ✔✔The car slows down
When a car's velocity is negative and its acceleration is negative, what is
happening to the car's motion? - ✔✔The car speeds up.
The graph above describes the motion of a cyclist. The graph illustrates that the
acceleration of the cyclist - ✔✔Is constant
The graph above describes the motion of a cyclist. During the interval shown, the
cyclist is - ✔✔Speeding up
What does the graph above illustrate about acceleration? - ✔✔The acceleration
varies.
In the graph above, how does the acceleration at A compare with the acceleration
at B? - ✔✔The accelerations at A and B are each zero.
Which of the following line segments on a velocity versus time graph are
physically impossible? - ✔✔Vertical line
, The graph above describes the motion of a ball. At what point does the ball have an
instantaneous velocity of zero? - ✔✔C
The graph above describes the motion of a ball. At what point is the speed of the
ball equal to its speed at B? - ✔✔C
The graph above describes the motion of a ball. At what point is the velocity of the
ball equal to its velocity at B? - ✔✔D
The motion of a ball on an inclined plane is described by the equation
displacement = 1/2(a*t)^2 Which of the following must have a value of zero? -
✔✔C
Acceleration due to gravity is also called - ✔✔Free-fall acceleration
Which of the following statements applies to the motion of a ball rising and then
falling in free fall? - ✔✔I, II, and III.
A baseball catcher throws a ball vertically upward and catches it in the same spot
as it returns to the mitt. At what point in the ball's path does it experience zero
velocity and nonzero at the same time? - ✔✔At the top of its path.
When there is no air resistance, objects of different masses dropped from rest -
✔✔Fall with equal accelerations and with equal displacements
CORRECT ANSWERS { GRADED A+}
What is the speed of an object at rest? - ✔✔0.0 m/s
Which of the following is an equation for average velocity? - ✔✔Vavg = change
in distance (x) / change in time (t)
Which of the following situations represents a negative displacement? (Assume
positive position is measure vertically upward along a y-axis.) - ✔✔A cat jumps
from a tree limb to the ground.
Which of the following units is the SI unit of velocity? - ✔✔Meter per second,
m/s
In the graph above, what is the correct description of any location to the left of the
zero? - ✔✔Negative position
In the graph above, a toy rolls from +3 m to +5 m. Which of the following
statements is true? - ✔✔Xi = +3m
,(Initial distance = +3m)
Suppose you are given a position versus time grap. The slope of a line drawn
tangent to a point on the curve of this graph describes what quantity? -
✔✔Instantaneous velocity
According to the graph above, during which interval is the cat at rest? - ✔✔5.0 -
10.0 s
According to the graph above, the cat has the fastest speed during which interval? -
✔✔10.0 - 15.0 s
According to the graph above, during which interval does the cat have the greatest
positive velocity? - ✔✔0.0 - 5.0 s
Which of the following line segments on a position versus time graph is physically
impossible? - ✔✔A vertical line
Acceleration is defined as - ✔✔The rate of change of velocity
Which of the following is an equation for acceleration? - ✔✔Acceleration =
change in velocity (v) / change in time (t)
What is the SI unit of acceleration? - ✔✔m/s^2
,If you know the acceleration of a car, its initial velocity, and the time interval,
which of the following can you predict? - ✔✔All of the above
When a car's velocity is positive and its acceleration is negative, what is happening
to the car's motion? - ✔✔The car slows down
When a car's velocity is negative and its acceleration is negative, what is
happening to the car's motion? - ✔✔The car speeds up.
The graph above describes the motion of a cyclist. The graph illustrates that the
acceleration of the cyclist - ✔✔Is constant
The graph above describes the motion of a cyclist. During the interval shown, the
cyclist is - ✔✔Speeding up
What does the graph above illustrate about acceleration? - ✔✔The acceleration
varies.
In the graph above, how does the acceleration at A compare with the acceleration
at B? - ✔✔The accelerations at A and B are each zero.
Which of the following line segments on a velocity versus time graph are
physically impossible? - ✔✔Vertical line
, The graph above describes the motion of a ball. At what point does the ball have an
instantaneous velocity of zero? - ✔✔C
The graph above describes the motion of a ball. At what point is the speed of the
ball equal to its speed at B? - ✔✔C
The graph above describes the motion of a ball. At what point is the velocity of the
ball equal to its velocity at B? - ✔✔D
The motion of a ball on an inclined plane is described by the equation
displacement = 1/2(a*t)^2 Which of the following must have a value of zero? -
✔✔C
Acceleration due to gravity is also called - ✔✔Free-fall acceleration
Which of the following statements applies to the motion of a ball rising and then
falling in free fall? - ✔✔I, II, and III.
A baseball catcher throws a ball vertically upward and catches it in the same spot
as it returns to the mitt. At what point in the ball's path does it experience zero
velocity and nonzero at the same time? - ✔✔At the top of its path.
When there is no air resistance, objects of different masses dropped from rest -
✔✔Fall with equal accelerations and with equal displacements
