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Ch. 4 Biomechanics Flashcards | StudBud
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Ch. 4 Biomechanics
Ch. 4 Biomechanics
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#Newton #Acceleration #COM
Flashcards
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1
Angular momentum states that
A linear object will continue unless a force is applied
If the body's mass is away from the center, the body slows
A rotating object will continue to turn unless a torque
If the body is tucked toward COM, then inertia is reduced
2
The ______ is better for high jump
Scissor
Frosbury flop
3
Displacement
is the moment of inertia divided by time
is measured in newtons
how far an object has moved in a given direction
mass times speed
4
As projection angle increases, velocity
stays the same
stays at zero
increases
decreases
5
Newton's second law states
An object will stay in motion unless acted on by a force
for every action there is an equal and opposite reaction
F=MA
6
Which variable is important for maximizing impulse?
speed
strength
flexibility
center of mass
7
Which of Newton's laws applies to projectile?
1st
2nd
3rd
8
Projection height is important
because it determines how far an object will go
accuracy
it maximizes the range of values for the speed or angle
9
The center of mass
is the point in which the weight is balanced in all paths
is the point at which the mass of an object is even
is the axis for all free airborne rotations
is the center of gravity
10
Acceleration
is momentum divided by time
force times mass
is the center of mass
is change in velocity divided by time
11
The largest positive impulse is at the
middle of the race
start of the race
end of the race
12
The moment of inertia
is the resistance to movement
is the ease of movement
is force times mass
13
Newton's first law states
An object stays in rest or in motion unless acted by a force
mass x velocity
for every action there is an equal and opposite reaction
14
The Bernoulli Principle states
the pressure exerted is dependent on the travel medium
the pressure exerted is inversely related to its velocity
the pressure exerted is proportionate to its velocity
the mass determines the velocity
15
Impulse
equals angular momentum
equals force x time
equals mass x time
equals center of mass times angle
16
Lift force states
states that the pressure will increase as velocity increases
the body will move from higher pressure to lower pressure
the body will move from lower pressure to higher pressure
the pressure difference will change the object's motion
17
Biomechanics is
The sport science field that applies physics to performance
The study of the forces on the human body and the result
The study underlining technique
The application of the laws of mechanics to performance
18
Force equals mass times
velocity
momentum
acceleration
impulse
19
As time increases, velocity
increases
stays the same
decreases
plateaus
20
Speed is a
acceleration quantity
vector quantity
scalar quantity
newton quantity
21
Projectile states that only
gravity plays a role in how far the object will go
lift forces play a role in how far an object will go
angle will play a role in how far an object will go
air resistance plays a role in how far an object will go
