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Berenguer Physics Chapter 4- Newton's laws Flashcards | StudBud
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Berenguer Physics Chapter 4- Newton's laws
Berenguer Physics Chapter 4- Newton's laws
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Answers
1
What causes acceleration?
velocity
force
speed
inertia
2
A cable supports a 3.0 x 10
5
N elevator. What is the tension on the cable if the elevator is accelerating up at 2.0m/s
2
6 x 105 N
3.6 x 105 N
6000N
3.0 x 10 5 N
3
The law of inertia is Newton's ____ law
second
third
fourth
first
4
The magnitude of the gravitational force acting on an object is
weight
acceleration
inertial
mass
5
What is the tendency of an object to maintain its state of motion?
acceleration
laziness
inertia
force
6
The length of a vector indicates the
direction of the force
magnitude of the force
direction of movement
the cause of the motion
7
What causes an object to change direction?
acceleration
inertia
force
velocity
8
What are the units for coefficient of friction?
it has no units
N
N2
1/N
9
A balloon exerts an upward force of 250N, gravity pulls down 120N. How much more force is needed to keep it from rising?
250 N
130 N
370 N
2 m/s2
10
A net force of 6.3N accelerates a 2.0kg skateboard across the parking lot. What is the acceleration?
3.15 m/s
3.15 m/s2
3.15 N
3.15 N kg
11
If the same force is applied to a 10kg mass and a 20 kg mass, which will accelerate more?
it would be the same for both
20kg
10kg
30kg
12
A newton is
kg m/s2
m/s2
kg (m/s)2
kg m/s
13
You pull a wagon at 50 above the horizontal. The horizontal component of force is 40N, What is the force on the handle?
30N
32N
52N
62N
14
As a rocket takes off from a launchpad
the downward acceleration of the Earth is very small due to its mass
the rocket does not exert a downward force on the Earth
the rocket exerts a upward force on the Earth
Newton's 3rd law does not apply
15
Please be ready for this test!!!!
Hold my beer, watch this
I got you Mr. B
Failure is not an option
I think I would rather just fail
16
It takes 150N to move a 12 kg box at a constant velocity. what is the coefficient of friction?
.78
12.5
1.27
.08
