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