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Duplicate of Duplicate of Physics[Forces, Dynamics] Newton's Laws Flashcards | StudBud
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Duplicate of Duplicate of Physics[Forces, Dynamics] Newton's Laws
Duplicate of Duplicate of Physics[Forces, Dynamics] Newton's Laws
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Forces, Motion, Newton's Laws
Flashcards
19 cards
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Questions
19
Answers
1
Which needs more force to move and therefore has greater inertia?
Mr.Engel
Smart Car
Elephant
iPhone
2
Three forces act on an object. If the object is in transnational equilibrium, which is true?
The vector sum of thethree forces must equal zero.
The magnitudes of thethree forces must be equal.
All three forces must be parallel.
3
g on the Moon is 1.62 m/s2. What is the weight of a 225 kg space probe on the Moon?
1.35 X 10^3 N
364 N
2.21 X 10^3 N
139 N
4
30 m/s^2 is...
velocity
speed
acceleration
motion
5
See image:
A
C
D
B
6
When a force is applied to an object, causing it to move, the forces are said to be
balanced
imbalanced
covalence
unbalanced
7
Speed + the direction is
Motion
Velocity
Speed
Acceleration
8
If the force of gravity suddenly stopped acting on the planets, they would
move in straight lines tangent to their orbits
spiral slowly away from the sun
spiral slowly towards the sun.
continue to orbit the sun
9
An object at rest or at constant speed is considered
unbalanced
balanced (at equilibrium)
imbalanced
covalence
10
The law of inertia applies to
objects at rest
moving objects
both moving and nonmoving objects
11
See image:
D
C
B
A
12
2 people are pulling on the ends of a rope. Each with a force of 100 N. The tension in the rope
0 N
100 N
141 N
50 N
13
What is the net force?
0 N
3 N right
9 N right
6 N right
14
The box below has a mass = 5 kg, calculate the acceleration and direction
2 m/s^2 right
2 m/s^2 left
5 m/s^2 left
5 m/s^2 right
15
Determine the aircraft's acceleration, a with full internal fuel:
10.5 m/s^2
5.58 m/s^2
8.25 m/s^2
7.90 m/s^2
16
75 mph is...
velocity
acceleration
speed
motion
17
Speeding up, slowing down, changing direction is
acceleration
velocity
motion
speed
18
What is the net force?
8 N left
4 N left
12 N left
12
19
30 m/s south is...
acceleration
speed
motion
velocity
