Physics 011
MC#2
Chapter 2: Describing Motion: Kinematics in One Dimension
Ayman A.Ghannam

A bird flies 4.0 meters due north in 2.0 seconds and then flies 2.0 meters due west in 1.0 seconds. What is the bird's average speed? 


2.0
m/s 


4.0
m/s 


8.0
m/s 


2/3
5 m/s 




If a car is travelling due south with a decreasing speed, then the direction of the car's acceleration is 


due
east. 


due
west. 


due
north. 


due
south. 




A hiker travels 60 meters north and then 120 meters south. What is her resultant displacement? 


20
m south 


60
m south 


120
m south 


180
m south 




If the average speed of a plane is 500 km per hour, how long will it take to fly 125 km? 


4.00
h 


2.00
h 


0.50
h 


0.25
h 




Applying the brakes to a car traveling at 45 km/h provides an acceleration of 5.0 m/s^{2} in the opposite direction. How long will it take the car to stop? 


0.40
s 


2.5
s 


5.0
s 


9.0
s 




A ball rolls down a frictionless inclined plane with a uniform acceleration of 1.0 m/s^{2}. If its velocity at some instant of time is 10 m/s, what will be its velocity 5.0 seconds later? 


5
m/s 


10
m/s 


15
m/s 


16
m/s 




A ball rolls down a frictionless inclined plane with a uniform acceleration of 1.0 m/s^{2}. If its initial velocity is 1.00 m/s, how far will it travel in 10 s? 


10
m 


12
m 


60
m 


100
m 




A body with an initial speed of 25 m/s accelerates uniformly for 10 seconds to a final speed of 75 m/s. What is the acceleration? 


3
m/s^{2} 


5
m/s^{2} 


25
m/s^{2} 


50
m/s^{2} 




A body initially at rest is accelerated at 5 m/s^{2} for 10 seconds. What is its final velocity? 


0.50
m/s 


2.0
m/s 


15
m/s 


50
m/s 




Which graph represents the motion of a body starting from rest and moving with a constant nonzero acceleration? 
















The speeds of a body at the ends of five successive seconds are: 180, 360, 540, 720, 900 m/h. What is the acceleration of the body? 


0.05
m/s^{2} 


20
m/s^{2} 


180
m/s^{2} 


180
m/h^{2} 




"An object is initially at rest then moves in a straight line and accelerates uniformly at a rate of 2.00 m/s^{2}." After the object has been
in motion for four seconds, its speed would be ___ m/s. 


6.0 


8.0 


10 


12 


20 


some
other value 




"An object is initially at rest then moves in a straight line and accelerates uniformly at a rate of 2.00 m/s^{2}." The distance traveled by
the object during the first five seconds of its travel was ___ m. 


6.0 


10 


12 


20 


25 


some
other value 




"An object is initially at rest then moves in a straight line and accelerates uniformly at a rate of 2.00 m/s^{2}." The average speed of the
object during the first six seconds of its travel was ___ m/s. 


6.0 


8.0 


10 


12 


16 


20 




"An object is initially at rest then moves in a straight line and accelerates uniformly at a rate of 2.00 m/s^{2}." The average speed of the
object during the third second of its motion was ___ m/s. 


2.0 


3.0 


4.0 


5.0 


6.0 


8.0 




"An object is initially at rest then moves in a straight line and accelerates uniformly at a rate of 2.00 m/s^{2}." The distance traveled by
the object during the fourth second of its travel was ___ m. 


2.0 


3.0 


4.0 


5.0 


6.0 


7.0 




"An object of mass m initially at rest experiences a constant acceleration of magnitude a_{o}. After a time interval t_{o} has elapsed, the speed of the car is v_{o} and it has traveled a distance d_{o}." After a total time 3 t_{o}
has elapsed, the speed of the object will be v_{o}x ___. 


1 


2 


3 


4 


8 




"An object of mass m initially at rest experiences a constant acceleration of magnitude a_{o}. After a time interval t_{o} has elapsed, the speed of the car is v_{o} and it has traveled a distance d_{o}." After a total time 2 t_{o}
has elapsed, the distance traveled by the object will be d_{o}x ___. 


1 


2 


3 


4 


8 




"Six different objects are observed to move in a straight line. Some aspect of the motion of each of the six objects is plotted as a function of time in the following graphs." Which graph(s)
represent(s) a situation in which the object moved with a constant nonzero
acceleration? 



















"Six different objects are observed to move in a straight line. Some aspect of the motion of each of the six objects is plotted as a function of time in the following graphs." Which graph represents a
situation in which the object moved with a constant zero acceleration? 


Graph
A 


Graph
B 


Graph
C 


Graph
D 


Graph
E 


Graph
F 




"An object is observed to move in a straight line. Some aspect of the motion of this object is plotted as a function of time in the following graph." The slope of the dashed line in the graph above represents ___. 


an
instantaneous position 


an
average position 


a
distance traveled 


an
instantaneous speed 


an
average speed 


a
change in speed 




"An object is observed to move in a straight line. Some aspect of the motion of this object is plotted as a function of time in the following graph." The slope of the dashed line in the graph above represents ____. 


an
instantaneous position 


an
average position 


an
instantaneous speed 


an
average speed 


an
instantaneous acceleration 


an
average acceleration 




"An object is observed to move in a straight line. Some aspect of the motion of this object is plotted as a function of time in the following graph." The shaded area in the graph above represents ___. 


an
average acceleration 


an
instantaneous position 


a
change in position or a distance traveled 


a
change in speed 


an
instantaneous speed 


an
average speed 




"An object is observed to move in a straight line. Some aspect of the motion of this object is plotted as a function of time in the following graph." The shaded area in the graph above represents ___. 


a
change in position 


an
instantaneous position 


a
distance traveled 


a
change in speed 


an
instantaneous speed 


an
average speed 




"The speed of an object moving in a straight line changes with time as in the figure below." For which of the time intervals was the average speed of the object greatest? 


t
= 0 to t = 1s 


t
= 1 to t = 2s 


t
= 2 to t = 3s 


t
= 3 to t = 4s 


t
= 4 to t = 5s 


none
of the above 




"The speed of an object moving in a straight line changes with time as in the figure below." During which time interval did the object travel with a constant nonzero acceleration? 


t
= 0 to t = 1s 


t
= 1 to t = 2s 


t
= 2 to t = 3s 


t
= 3 to t = 4s 


t
= 4 to t = 5s 


none
of the above 




"The speed of an object moving in a straight line changes with time as in the figure below." During which time interval was the average speed least? 


t
= 0 to t = 1s 


t
= 1 to t = 2s 


t
= 2 to t = 3s 


t
= 3 to t = 4s 


t
= 4 to t = 5s 


none
of the above 




"The speed of an object moving in a straight line changes with time as in the figure below." During which time interval did the maximum value of the magnitude of the instantaneous acceleration occur? 


t
= 0 to t = 1s 


t
= 1 to t = 2s 


t
= 2 to t = 3s 


t
= 3 to t = 4s 


t
= 4 to t = 5s 


none
of the above 




"The speed of an object moving in a straight line changes with time as in the figure below." During which time interval was the speed of the object constant? 


t
= 0 to t = 1s 


t
= 1 to t = 2s 


t
= 2 to t = 3s 


t
= 3 to t = 4s 


t
= 4 to t = 5s 


none
of the above 




"The speed of an object moving in a straight line changes with time as in the figure below." During which time interval did the minimum value of the instantaneous speed occur? 


t
= 0 to t = 1s 


t
= 1 to t = 2s 


t
= 2 to t = 3s 


t
= 3 to t = 4s 


t
= 4 to t = 5s 


none
of the above 




"The speed of an object moving in a straight line changes with time as in the figure below." During which time interval was the magnitude of the average acceleration greatest? 


t
= 0 to t = 1s 


t
= 1 to t = 2s 


t
= 2 to t = 3s 


t
= 3 to t = 4s 


t
= 4 to t = 5s 


none
of the above 




"The speed of an object moving in a straight line changes with time as in the figure below." During which time interval was the magnitude of the average acceleration least? 


t
= 0 to t = 1s 


t
= 1 to t = 2s 


t
= 2 to t = 3s 


t
= 3 to t = 4s 


t
= 4 to t = 5s 


none
of the above 




"For this question, assume that g = 10.00 m/s^{2}. A small stone originally at rest is dropped over the edge of a very tall building." During the fourth second of the fall, the speed of the stone changes ___ m/s. 


5.0 


10 


15 


20 


30 




"For this question, assume that g = 10.00 m/s^{2}. A small stone originally at rest is dropped over the edge of a very tall building." During the second second
of fall, the average speed of the stone is ___ m/s. 


5.0 


10 


15 


20 


30 




"For this question, assume that g = 10.00 m/s^{2}. A small stone originally at rest is dropped over the edge of a very tall building." During the first second of
fall, the stone falls a distance of ___ m. 


5.0 


10 


15 


20 


30 




"For this question, assume that g = 10.00 m/s^{2}. One reaches out over the edge of a tall building and throws a stone straight up with an initial speed of 20.00 m/s." The change in speed of the stone during the first second of its motion is ___ the change in its speed during the third second of its motion. 


equal
to 


less
than 


more
than 




"For this question, assume that g = 10.00 m/s^{2}. One reaches out over the edge of a tall building and throws a stone straight up with an initial speed of 20.00 m/s." The distance traveled by
the stone during the 1st second is ___ the distance traveled by the stone
during the 2nd second. 


equal
to 


less
than 


more
than 




"For this question, assume that g = 10.00 m/s^{2}. One reaches out over the edge of a tall building and throws a stone straight up with an initial speed of 20.00 m/s." At the instant the stone
is at its maximum altitude, the acceleration of the stone is ___. 


10
m/s^{2} upward 


10
m/s^{2} horizontal 


10
m/s^{2} downward 


something
else 




"For this question, assume that g = 10.00 m/s^{2}. One reaches out over the edge of a tall building and throws a stone straight up with an initial speed of 20.00 m/s." The time required for the
stone to reach its maximum altitude is ___ sec. 


1 


more
than 1 but less than 2 


2 


more
than 2 