- Weight (force of gravity) decreases as you move away from the earth by distance squared.
- Mass and inertia are the same thing.
- Constant velocity and zero velocity means the net force is zero and acceleration is zero.
- Weight (in newtons) is mass x acceleration (w = mg). Mass is not weight!
- Velocity, displacement [s], momentum, force and acceleration are vectors.
- Speed, distance [d], time, and energy (joules) are scalar quantities.
- The slope of the velocity-time graph is acceleration.
- At zero (0) degrees two vectors have a resultant equal to their sum. At 180 degrees two vectors have a resultant equal to their difference. From the difference to the sum is the total range of possible resultants.
- Centripetal force and centripetal acceleration vectors are toward the center of the circle- while the velocity vector is tangent to the circle.
- An unbalanced force (object not in equilibrium) must produce acceleration.
- The slope of the distance-tine graph is velocity.
- The equilibrant force is equal in magnitude but opposite in direction to the resultant vector.
- Momentum is conserved in all collision systems.
- Magnitude is a term use to state how large a vector quantity is.
Mechanics Facts
Mechanics Facts