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Average Velocity
& Units
m/s
Average Acceleration
& Units
m/s^{2}
Velocity at time t with acceleration a:
Units?
m/s
Distance at time t with acceleration a:
Units?
meters
Find velocity at a point d with acceleration a:
distance at time t without acceleration a:
Average Velocity:
On an xy axis with a velocity with angle between velocity and the x axis, What is the X component of the velocity? What is the Y component of velocity?
Common Trigonometric Functions:
sin 0
cos 0
tan 0
sin 0 = 0
cos 0 = 1
tan 0 = 0
sin15
cos15
tan15
sin15=0.259
cos15=0.966
tan15=0.268
sin30
cos30
tan30
sin30=0.5
cos30=0.866
tan30=0.577
sin45
cos45
tan45
sin45=0.707
cos45=0.707
tan45=1
sin60
cos60
tan60
sin60=0.866
cos60=0.5
tan60=1.73
sin75
cos75
tan75
sin75=0.966
cos75=0.259
tan75=3.73
sin90
cos90
tan90
sin90=1
cos90=0
tan90= not possible.
Define momentum:
What are it's units?
kg m/s or N s
Define Impulse:
But is more useful as: Change in Momentum
Define Work:
What are the Units?
where theta is the angle between F and d
Its units are Joules (N m)
Define Power
What are the units?
It is Joules/s or Watts.
Define Kinetic Energy:
the Joule
Define Potential_{G} Energy
The Joule
When is total mechanical energy conserved?
When the sum of PE and KE is constant
What is the Work Energy Theorum?
All work performed is equal to the Change in Kinetic Energy: