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Kinematics and Mechanics - 3S Flashcards | StudBud
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Kinematics and Mechanics - 3S
Kinematics and Mechanics - 3S
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recap what we learned today in Kinematics and Mechanics
Flashcards
15 cards
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Questions
15
Answers
1
What is the centrifugal force on an object swung on a 5m long rope in a circle at 5 m/s?
centrifugal force does not exist
0
25
5
2
Which of the following is NOT a SI base unit?
candela
degrees Kelvin
mole
meter
3
Speed has a magnitude and direction
False
True
4
Stephanie tries to move her couch by applying 500N of force, but the couch does not move. How much work is done?
cannot be determined
500
0
5
Which of the following quantities is torque not based on?
force applied
distance between force application and center
mass of object applying torque
angle
6
potential energy is not energy
False
True
7
I throw a ball upwards at 100 m/s from the ground. In how many seconds will it hit the ground again? Ignore my height.
40
30
10
20
8
Why do objects on Earth eventually slow down and stop?
friction
gravity
they don't
Newton's First Law
9
Sam (mass 80 kg) is running at a speed of 5 m/s. What is his momentum?
500
600
300
400
10
all actions have opposite and equal reactions
True
False
11
A 10g baseball travels at 80 m/s. What is its kinetic energy in Joules?
16
32
64
8
12
torque is measured in joules
True
False
13
What is the moment of inertia of a solid sphere with mass 4 kg and radius 2 m?
1.6
6.4
3.2
12.8
14
Newton created 3 laws of physics
True
False
15
Which of the following is not a commonly used SI prefix?
centi
mega
deca
milli
