# Application of forces

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• Created by: Mary
• Created on: 23-09-14 12:13
Footfall
the action of the foot making contact with the ground when walking, running or jumping
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Negative impulse
a force generated when absorbing body motion-landing
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Positive impulse
an impulse that moves the body
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Angular velocity
the rate of movement in rotation.
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Angular acceleration
the amount of motion that the body has during rotation - angular velocity X momentum of inertia.
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Angular momentum
the amount of motion that the body has during rotation - angular velocity X momentum of inertia.
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Moment of inertia
the resistance of a body to a change of state when rotating.
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Angular
a word used to describe the motion of a mass when it is rotating or spinning.
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Moment
the turning effect produced by a force, measured in newton metres(Nm); also known as torque.
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Moment arm
the perpendicular distance from the point of application of a force to the axis of rotation.
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Resistance arm
the mass and the lever system from the mass to the fulcrum.
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Effort arm
the part of the lever system from where the effort is applied to the fulcrum.
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Perpendicular
at right angles to.
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Principle of moments
for a body to be equilibrium (balance), the sum of the clockwise moments is equal to the sum of the anticlockwise moments about the fulcrum (pivot)
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Angular movement
the movement of a body or mass around an axis- spinning, rotating, turning.
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Conservation of angular movement
the principle that the angular momentum of an object reaimins constant as long as no external force (moment or torque) acts on that object.
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Angle of release
the angle at which an object is released, measured from the horizontal.
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Parabolic curve
the flight path of a projectile in the absence of air resistance.
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Horizontal component
the horizontal motion of an object in a parabolic flight curve.
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Vertical component
the upward motion of an object in a parabolic flight curve.
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Height of release
the highest point above the ground that an object is released.
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Velocity of release
the velocity of the object when it is released from the hand.
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## Other cards in this set

### Card 2

#### Front

a force generated when absorbing body motion-landing

Negative impulse

### Card 3

#### Front

an impulse that moves the body

### Card 4

#### Front

the rate of movement in rotation.

### Card 5

#### Front

the amount of motion that the body has during rotation - angular velocity X momentum of inertia.