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Speed And Forces Of Motion
Test Description: Test Review for Chpt 5
Instructions: Answer all questions to get your test result.
1) What are the two components of speed?
A
changes in direction
B
direction and speed
C
distance and direction
D
distance and time
2) What is the factor that makes the difference between speed and velocity?
A
direction
B
distance
C
time
D
they are the same
3) On a time and distance graph a horizontal line means....
A
the object is accelerating
B
the object is stationary
C
the object is decelerating
D
the object is traveling at a constant speed
4) On an acceleration graph a straight horizontal line means
A
none of these
B
deceleration
C
constant speed
D
constant acceleration
5) Distance is the measure of the entire path an object has traveled from begining to end.
A
True
B
False
6) The force that opposes motion is called
A
weight
B
friction
C
gravity
D
speed
7) The sum of all the forces acting on an object is called
A
zero
B
net force
C
unbalanced
D
balanced
8) Unbalanced forces always result in
A
a change in the motin of an object
B
a net force of zero
C
friction
D
no change in the motion of an object
9) If 50 newtons of applied force are pushing to the right and 35 newtons of fricitonal force is resisting the motion. What is the netforce?
A
85 N to the right
B
zero
C
15 N to the right
D
15 N to the left
10) Which of the following identifies the 2 types of kinetic friction?
A
sliding and rolling
B
static and kinetic
C
static and sliding
D
kinetic and sliding
11) Which of the follwing results in a decrease in friciton?
A
using rougher sandpaper
B
spraying a pan with oil before cooking
C
putting salt on an icy sidewalk
D
adding ridges to a bottle cap
12) What are three ways to reduce friction?
A
increase the roughness of the surface, add wheels, and reduce the weight of the object
B
use a lubricant, smoother surface, use wheels
C
use a deeper tread, add wheels , and reduce the weight of the object
13) What does a straight diagonal line mean on an acceleration graph?
A
constant speed
B
constant acceleration
C
constant velocity
D
none of these
14) If Lindsey travels 300meters North and then 200meters South. What is her displacement
A
100meters North
B
zero meters
C
500 meters south
D
500 meters north
15) Which of the following is a helpful use of frictional force?
A
using your eraser to remove an incorrect answer
B
wearing a whole in you sock
C
add a lubricant
D
sliding on the ice
16) Which of the following is a way to reduce friction?
A
increase the force holding the items together
B
none of these
C
use a lubricant
D
make the surface rougher
17) The difference between speed and velocity is
A
speed
B
distance
C
direction
D
time
18) An object's change in velocity over time is
A
friction
B
reference point
C
acceleration
D
speed
19) What is the speed of an object that travels 50cm in 15seconds?
A
450cm/s
B
1.7cm/s
C
1.7cm/s/s
D
.3cm/s
20) Which type of motion does not result in a change in motion?
A
unbalanced forces
B
speed
C
net force
D
balanced forces
*select an answer for all questions
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