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Newtons laws Flashcards | StudBud
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Newtons laws
Newtons laws
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#Mr.kenney
Flashcards
30 cards
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Questions
30
Answers
1
If a nonzero net force is acting on an object. the the object is
Moving at a constant velocity
Being accelerated
At rest
Losing mass
2
A 600N woman sits on the floor. How much force does the floor exert on the woman?
6N
6000N
60N
600N
3
Object on the earth weighs 30N. Another object weighs 30N on the moon. Which has greater mass?
The one on the moon
They have the same mass
Not enough Info.
The one on the earth
4
Which of the following is the tendency of an object to maintain its state of motion
Intreia
Inertia
Force
Velocity
5
Which of the following is the gravitational force acting on the balloon
1520N
950N
4050N
5120N
6
A hockey stick hits a hockey puck on the ice. Identify an action-reaction statement?
stick exerts a force on ice;ice exerts a force in puck
stick exerts a force on puck;puck exerts a force on ice
stick exerts a force on stick;stick exerts a force on ice
stick exerts a force on puck;puck exerts a force on stick
7
Which are simultaneous equal but opposite forces resulting from the interaction of two objects?
net external forces
action reaction pairs
field forces
Gravitational forces
8
When a woman stands two feet on a scale it reads 280 N. what happens when she lifts one foot up
the scale shows more
The scale shows less
The scale stays the same
She breaks it
9
a bag of sports equipment has a mas of 10 kgand a weight of
98N
.98N
9.8N
980N
10
Which of the following statements doesn't describe force?
Force causes objects to stop moving
Force causes objects at rest to remain stationary
Force causes objects to start moving
Force causes objects to change direction
11
What is the SI unit for Acceleration?
m/s3
m/s2
Km/s2
MPH
12
The acceleration produced by a net force on an object is
All of the awnsers
Directly proportional to the magnitude of the net force
In the same direction as the net force
Inversely proportional to the mass
13
which of the following is the cause of an acceleration or a change in an objects motion?
inertia
speed
force
velocity
14
Forces always occur
As singularities
By themselves
In pairs
In triplets
15
The force required to maintain an object at a constant speed in free space is equal to
9.8
the force required to stop it
the mass of the object
zero
16
How much does a 5.2 kg bag of bolts weigh?
50.96N
1.5N
48.45N
12.36N
17
The normal force
Equals Fg in magnitude
Acts perpendicular to the surface
Points vertically upward
Is a scalar to a surface
18
The mass of a car that weighs 110N is about
110kg
11kg.
1kg.
1100kg.
19
A measure of quality of matter is
weight
mass
force
density
20
if the force of gravity suddently stop acting on the planets, they would
keeps orbiting
move tangent from their orbit
Fly straight away from the sun
move tangent to the earths orbit
21
A girl pulls on a 100 kg wagon with a constant force of 1000N. What is the wagons acceleration?
100 m/s2
2 m/s2
150 m/s2
110 m/s2
22
How does acceleration of an object change in relation to its mass? Is it
Directly proportional
Acceleration doesn't depend on mass
Inversely proportional
23
Comparing to its weight on earth, a 10 kg object on the moon will weigh
same
more
less
a lot more
24
A woman weighs 550N sits on the floor. She exerts the force on the floor of
550D
550J
550N
550
25
A force is exerted on the tires of a car to accelerate along the road. The force is exerted by
The road
The tires
The air
The engine
26
How much force is needed to accelerate a 4kg physics bookto an acceleration of 2m/s
2
?
8N
2N
0N
.5N
27
An object has a constant mass. A constant force on the object produces constant
None of the awnsers
Both acceleration and velocity
Acceleration
Velocity
28
Comparing to its mass on earth, the mass of a 10 kg object on the moon will be
the same
more
less
a lot more
29
What are the units of the coefficient of friction
.
N2
N
m/s2
30
An apple weighs 1N. The net force on the apple when it is in free fall is
9.8N
1N
0N
1.1N
