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Newton's Laws - Miceli Physics Flashcards | StudBud
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Newton's Laws - Miceli Physics
Newton's Laws - Miceli Physics
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Newtons laws of motion
Flashcards
25 cards
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Practice quiz
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Questions
25
Answers
1
An object will move at the same velocity, which means at the same _____ and in the same______
distance and space
velocity and acceleration
time and place
speed and direction
2
Newton’s second law says that when an _____ force is applied to a _____, it causes it to_____.
mass, acceleration, external force
External, mass, accelerate
force, mass, acceleration
acceleration, force, mass
3
The units for mass is ________
m/s^2
N
m/s
kg
4
A box weighs 10 N when resting on a table. The net force on the box is ___.
0.10 N
0 N
9 N
10 N
5
Equilibrium occurs when ____.
all the forces acting on an object are balanced
the net force on the object is zero
the sum of the upward forces equals the sum of the downward forces
all the above
6
A ball is thrown vertically into the air. At the maximum height of its path, the net force on the ball is ___.
its weight (Fg)
more than its weight
zero
less than its weight
7
The units for Force is _____
m/s
N
m/s^2
s
8
A constant force is applied to a box (of constant mass). This produces a constant ___.
velocity
all of the above
acceleration
displacment
9
Newton's 3rd Law states that forces must ALWAYS occur in _______.
Reactions
Earth
Pairs
Actions
10
An object following a straight-line path at constant speed ___.
has zero acceleration
must be moving in a vacuum
has no forces acting on it
has a net force acting on it in the direction of motion
11
Weight (F
g
) can be represented by a vector that acts ____.
perpendicular to the surface in contact with
parallel to the surface
in a direction dependent on where the object is placed
straight down, even if standing on an incline
12
True or False? Inertia is the tendency of an object to continue to be at rest or in constant motion.
False
True
13
A bug hits the windshield of a moving car. Compared to the force of the car on the bug, the force of the bug on the car
the same
smaller
need more info
larger
14
If the same force is applied to an object with a large mass, it will have a _____ acceleration.
smaller
larger
15
What is the force needed to maintain a constant velocity of an object that has a frictional force of 25 N.
25 N
Less than 25 N
More than 25 N
16
A car locks its brakes and skids to a stop. If the car's mass is doubled, its skidding distance would be __.
half as far
the same
twice as far
four times as far
17
an object (in space) that is MOVING will keep moving with constant_____________.
rest
acceleration
velocity
deceleration
18
___ is a force acting in a direction that opposes the motion of an object.
Friction
Normal
Weight
Tension
19
Newton's 3rd Law of Motion is also known as THE LAW OF___________
F=ma
Forces
action and reaction pairs
Inertia
20
The force required to maintain an object at a constant speed in free space (vacuum) is equal to ___.
the weight of the object
zero
the mass of the object
the force required to stop it
21
A reindeer pulls on a 25-kg sleigh with a constant force of 100 N. What is the sleigh's acceleration? (ignore friction)
250 m/s2
0.25 m/s2
3 m/s2
4 m/s2
22
A rocket is accelerating in space by a 20-N force then suddenly encounters another 20-N force in the opposite direction.
gradually decelerates to a halt
The rocket continues at the speed it had when it encountered the 2nd force
The rocket accelerates to speed of light
The rocket suddenly stops
23
What property of an object determines how much inertia it has?
gravity
weight
force
mass
24
The greater the force applied to an object, the _____________ acceleration
greater
lesser
25
Newton's Second Law of Motion is known as___________
Action
Force
Inertia
Fnet=ma
