Biomechanics Flashcards
What is a scalar
To do with the size and force
What are the 3 principles of muscles movements
- Muscles create a force
- The force is applied
- Force governs direction
How to calculate Wight force ( what is the unit for 👆 )
newtons
Mass (kg) X acceleration ( N )
What is inertia
Reluctance of a body to change its stage of motion
What is displacement
The shortest route possible between a start and finish
Vector
What is distance
Measures of a path a body takes from moving from 1 position to another
( scalar )
What is acceleration
The rate of change of velocity of an object ( vector )
Positive change in velocity
What is momentum and
How to calculate momentum
(kg/m/s )
Amount of motion a moving body possess and this is the the result of mass and velocity
MAss X velocity
What is impulse (N/s)
And how to work it out
Length of time a force is applied to an object or body
Force (N) X time (sec)
What is a vector
To do with the direction and magnitude
how do you calculate velocity
displacement/time
how do you calculate speed
distance/time
is displacement a vector or scalar
vector
is distance a vector or sclar
scalar
what are the 3 laws of motion
1, inertia
2, acceleration
3, action reaction
3 factors that affect an object in motion
angle of release
height of release
velocity of release
what 2 forces affect a projectile (in air)
weight and air resistance
why is a force a vector quantity
it has a size, direction and point of application
name the vertical forces
weight
gravity
reaction
name the horizontal forces
friction
air resistance
what does angular momentum relate to
rotation of an object in motion
is inversely proportional
what does angular momentum relate to
moment of inertia
angular velocity
what is moment of inertia
what does it depend on :
the resistance of the body that is in angular motion
body mass
distribution of mass
