Physics Flashcards
Understand concepts
Sin 0°
0
Sin 30°
1/2
Sin 45°
(\/-2)/2
Sin 60°
(\/-3)/2
Sin 90°
1
Sin 180°
O
Cos 0°
1
Cos 30°
(\/-3)/2
Cos 45°
(\/-2)/2
Cos 60°
1/2
Cos 90°
O
Cos 180°
-1
Tan 45°
1
Speed
Distance/time
Acceleration
Velocity1time
Overall velocity
Initial velocity v(o) + acceleration (time)
Acceleration d1t gravity
9.8 m/s
Force
Mass x acceleration; measured in Newtons (N)
Weight
Mass x acceleration d/t gravity; also measured in Newtons (N)
Normal force
The force perpendicular to the surface
Friction force
The force parallel to the surface
Distance
(Acceleration x time^2)/2
Gravitational force
(G x mass1 x mass2) / r^2
where G is the gravitational constant (6.67x10^-11 Nm^2/kg^2) and r is the distance between their centers
Translational equilibrium
The sum of forces pushing the object through space is counterbalanced by the sum of forces acting in the opposite direction.
Torque
Radius x force x sin®
Counterclockwise is the positive direction and clockwise is the negative direction
