Kinematics
The trajectory of an object launched from the ground to its landing point makes what shape?
What is a Parabola?
This ‘m’ word is synonymous to lever arm.
What is “moment arm”?
Compared to air, the density of helium is…
What is less/lower/smaller etc. ?
The point of which a lever turns or balances on is called the…
What is the Fulcrum/Axis?
This happens to the speed of a plane when the drag is greater than the thrust.
What is slows down?
When there is no (angular) acceleration, a system is said to be in…
What is Equilibrium?
Formula for force (with pressure).
What is F= Pressure x Area ?
The effort arm on a lever system is in between the fulcrum and load arm. This is what lever class?
What is Class 3?
A woman walks 5m northeast, 7m east, crosses a 20m bridge north, walks 9m west, takes a bus 457m southwest, then runs 170m west to get to her job on time. She is 278m from her original point. Her displacement is…
What is 278m?
The equation for torque when a lever system is at equilibrium.
What is F1r2 = F2r2 ?
The Upward force on an object submerged in a medium (sunken in water or floating in air).
What is Buoyant Force?
Standing on your toes creates this type of lever system.
What is Class 2?
A car is moving at a constant speed of 20m/s which then stops within 10 seconds. What is its acceleration?
What is -2m/s ?
The equation for torque when the force is applied at an angle.
What is T= F r Sin(θ)?
True or False? The volume of displaced water is the volume of a partially submerged object.
What is FALSE?
In this lever system, the load and effort arms are moved in opposite directions.
What is Class 1?
The gravitational constant of the moon.
(hint: it is 1/6th that of Earth’s gravitational constant)
What is 1.62 – 1.633m/s^2
(9.81/6 = 1.63)
A teeter- totter sits on an axis, both lever arms have an equal length of 5m. A horse (1200N) sits on one end of the teeter totter. How far from the axis must another animal of 800N sit on the other lever arm to balance the teeter-totter (theoretically).
What is 7.5m?
The downward forces acting on a blimp floating in the air.
What are the Weight of Helium gas and the Weight of the blimp?
A wheelbarrow is an example of this lever class.
What is Class 2?