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Physics
Physics
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A physics quiz to review the module
Flashcards
50 cards
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Practice quiz
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Questions
50
Answers
1
What is force?
Powerful entity
any interaction that,will change the motion of an object .
MIlitary group
streght
2
The slope of a Velocity versus Time graph will tell you the object's what? (5 points)
Velocity
Acceleration
Change in position
Time
3
What net force is necessary to give a 2.0 kg mass initially at rest an acceleration of 5.0 m/s
2
7.0 N
2.5 N
10. N
40 N
4
An object with a mass of 2.0 kg is accelerated at 5.0 m/s
2
. The net force acting on the mass is
10 N
0.4 N
5 N
2.5 N
5
Mentioned a Scalar quantity
density
force
velocity
displacement
6
The Value of acceleration is the SI
32.2 ft/s2
9.89 m/s2
32.2 m/s2
9.89 ft/s2
7
The generic equation suggested by a graph showing a half-parabola is which of the following?
y = mx + b
y = k (1/x)
y = kx2
8
In a vacuum, the gravitational force is "turned off.
False
True
9
Mentioned one vector quantity
Work
Energy
Weight
Pressure
10
Calculate the average acceleration of the plane.
4.5 m/s2, West
3.0 m/s2, North
3.2 m/s2, East
4.2 m/s2 East
11
Solve for "g": T=2π√L/
g
g=t2 /22π2L
g=22π2 L/t2
g=√2πL/t
g=√T/2πL
12
Mentioned one branches of Physics
Kinematics
Thermodynamics
Motion
Relative Motion
13
Formula of Newton's law of unviersal gravitation?
Fg = (Gm1m2)/d2
Fe = (Kq1q2)/d2
F=ma
a=vf-vo/t
14
When you look at your speedometer and it reads 60 mph, this is your instantaneous speed.
True
False
15
In a vacuum, the gravitational force is "turned off."
True
False
16
The average speed of a plane is 560 kph. How long does it take the plane to travel 140 km?
0.25 hour
1.34 hour
3.9 hour
0.75 hour
17
What represent a vector quantity?
Circle
arrow-tipped line segment.
Ray
Line
18
Which has the greater acceleration: the bat or the ball?
The both have the same magnitude of acceleration.
The ball because it has a smaller mass than the bat.
The bat because it has a larger mass than the ball.
19
What defined a vector quantity?
Magnitude
Direction
Magnitude and Direction
Size
20
The base unit for mass in the SI system is the
Pound
kilogram
slug
gram
21
The equation for average speed is
v = d/t.
Solve the equation for
T.
t=d*v
t=v/d
d = vt
t = d/v
22
Which is a positive direction?
East
East-west
North
West
23
A net force of 125 N accelerates a 25.0 kg mass. What is the resulting acceleration?
0.04 m/s2
5 m/s2
0.03 m/s2
100 m/s2
24
"how far out of place an object is"
Distance
Displacement
25
When the Large Hadron Collider start up?
April 28 2008
September 26 2010
June 12 2009
September 10 2008
26
The Washington Monument in our nation's capital is 555 ft high. What is the height in meters?
189 m
78 m
100 m
169 m
27
A variable that can be manipulated by the scientist in an experiment is a(n)
independent variable
dependent variable
28
What is gravity?
Any two objects exert a gravitational force on each other
Attractive force that acts on any two objects with mass.
32.56 ft/s2
Earth’s gravitational pull on all objects
29
The following force diagram represents Newton's Third Law of Motion:
False
True
30
What is acceleration?
"the rate of change of velocity with respect to time"
the act of accelerating
"speeding up"
increasion velocity or speed
31
What is Speed?
"how fast an object is moving"
A vector quantity
speed= displacement/time
"the rate at which an object changes its position."
32
What is velocity
the distance covered in a unit of time”
Is a scalar quantity
“how fast something moves”
“speed having direction”
33
How many laws of motion are there?
2
3
4
6
34
Solve for "a"
a=2t/d2
a = 2d/t2
a=dt2/2
a=t2 /2d
35
What is Mass?
the amount of matter in an object.
Every object is attracted to one another by a force.
A measure of gravitational attraction of an object.
A scale measures the amount of force your mass exerts
36
The law of inertia applies to
moving objects
objects that are not moving
both moving and non-moving objects
Any type of object
37
Binds quarks together in clusters to make more-familiar subatomic particles
gravitational force
strong nuclear force
weak nuclear force
electromagnetic force
38
Calculate the speed of the man moving 45m to the north, and 36m to the south in 27 seconds.
v=0,33 m/s
v=81 m
v=3 m/s
v=0.81 m
39
Instantaneous speed
c.Rate of change of distance with time
Speed at a particular instant of time
Total distance covered divided by the total time required
Rate of change of velocity with time
40
How long would it take for the sound of thunder to travel 15 miles at speed of 343 m/s?
70.4 s
25725 m
34.4 s
45.6 s
41
As the distance between two masses increases the gravitational force of attraction between them
remain the same
increases
decreases
42
What is weight?
the amount of "stuff" in an object.
The greater the mass of an object, the greater the inertia
force due to the gravitational attraction to the Earth.
basic quantity.
43
A car accelerates from 6 m/s to 20 m/s, over a distance of 50 m. What is its the acceleration?
4.63 m/s²
4.06 m/s²
3.64 m/s²
3.53 m/s²
44
Calculate the average
velocity of the car if the travel takes10 seconds.
22 m/s
80 m
8 m/s east
11 m
45
Which phrase best describes the speed?
speed is constant
Speed is decreasing
the object is not moving
speed is increasing
46
What is the average speed of the car during the first two hours of the trip?
80 miles/hour
20 miles/hour
0 miles/hour
40 miles/hour
47
Which is one way of change velocity?
Change magnitude
Change time
Change both the speed and direction
Change the velocity
48
Solve for "vf": a = (
vf
- vo)/t
vf = vo*a+t
vf = vo*t/a
vf = vo*at
vf = vo + at
49
All motion is relative to a reference point
True
False
50
What is the Newto'n First Law?
F= Gm1m2 /d2
action and reaction
Inertia
F=ma
