Chapter 2: Describing Motion: Kinematics in One Dimension
MCAT Study Guide



1.  

Statement 1 applies to Questions 1–5.

"An object initially at rest then moves in a straight line and accelerates uniformly at a rate of 2.00 m/s2."

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


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


3.  

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


4.  

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


5.  

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


6.  

Statement 2 applies to Questions 6–7.

"An object of mass m initially at rest experiences a constant acceleration of magnitude ao. After a time interval to has elapsed, the speed of the car is vo and it has traveled a distance do."

After a total time 3 to has elapsed, the speed of the object will be vo x ___.

1
2
3
4
8


7.  

After a total time 2 to has elapsed, the distance traveled by the object will be do x ___.

1
2
3
4
8


8.  

Statement 3 applies to Questions 8–13.

"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 nonzero acceleration?



9.  

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


10.  

The slope of the dashed line in Graph B of Question 8 represents ___.

an instantaneous position
an average position
a distance traveled
an instantaneous speed
an average speed
a change in speed


11.  

The slope of the dashed line in Graph C of Question 8 represents ____.

an instantaneous position
an average position
an instantaneous speed
an average speed
an instantaneous acceleration
an average acceleration


12.  

The shaded area in Graph D in Question 8 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


13.  

The shaded area in Graph E in Question 8 represents ___.

a change in position
an instantaneous position
a distance traveled
a change in speed
an instantaneous speed
an average speed


14.  

This statement applies to Questions 14–21.

"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 = 1 s
t = 1 to t = 2 s
t = 2 to t = 3 s
t = 3 to t = 4 s
t = 4 to t = 5 s
none of the above


15.  

During which time interval did the object travel with a constant nonzero acceleration?

t = 0 to t = 1 s
t = 1 to t = 2 s
t = 2 to t = 3 s
t = 3 to t = 4 s
t = 4 to t = 5 s
none of the above


16.  

During which time interval was the average speed least?

t = 0 to t = 1 s
t = 1 to t = 2 s
t = 2 to t = 3 s
t = 3 to t = 4 s
t = 4 to t = 5 s
none of the above


17.  

During which time interval did the maximum value of the magnitude of the instantaneous acceleration occur?

t = 0 to t = 1 s
t = 1 to t = 2 s
t = 2 to t = 3 s
t = 3 to t = 4 s
t = 4 to t = 5 s
none of the above


18.  

During which time interval was the speed of the object constant?

t = 0 to t = 1 s
t = 1 to t = 2 s
t = 2 to t = 3 s
t = 3 to t = 4 s
t = 4 to t = 5 s
none of the above


19.  

During which time interval did the minimum value of the instantaneous speed occur?

t = 0 to t = 1 s
t = 1 to t = 2 s
t = 2 to t = 3 s
t = 3 to t = 4 s
t = 4 to t = 5 s
none of the above


20.  

During which time interval was the magnitude of the average acceleration greatest?

t = 0 to t = 1 s
t = 1 to t = 2 s
t = 2 to t = 3 s
t = 3 to t = 4 s
t = 4 to t = 5 s
none of the above


21.  

During which time interval was the magnitude of the average acceleration least?

t = 0 to t = 1 s
t = 1 to t = 2 s
t = 2 to t = 3 s
t = 3 to t = 4 s
t = 4 to t = 5 s
none of the above


22.  

This statement applies to Questions 22–24.

"For this series of questions, assume that g = 10.00 m/s2. 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


23.  

During the second second of fall, the average speed of the stone is ___ m/s.

5.0
10
15
20
30


24.  

During the first second of fall, the stone falls a distance of ___ m.

5.0
10
15
20
30


25.  

This statement applies to Questions 25–28.

"For this series of questions, assume that g = 10.00 m/s2. 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.

more than
less than
equal to


26.  

The distance traveled by the stone during the first second of its motion is ___ the distance traveled by the stone during the second second of its motion.

equal to
less than
more than


27.  

At the instant the stone is at its maximum altitude, the acceleration of the stone is ___.

10 m/s2 upward
10 m/s2 horizontal
10 m/s2 downward
something else


28.  

The time required for the stone to reach its maximum altitude is ___ s.

1
more than 1 but less than 2
2
more than 2


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