| Kinematics | Dynamics | Energy | Momentum | Torque |
|---|---|---|---|---|
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Speed is a scalar which has a magnitude and a distance while velocity is a vector and has a magnitude and a distance with a specific direction.
What is difference between speed and Velocity?
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Inertia is the tendency of an object to resist a change in a state of motion?
What is Inertia?
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Joules: J
What is the Unit for energy?
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p = mv
What is the equation for Momentum?
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When an object spins about a fixed axis.
What is Rotational Motion?
|
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V=ΘP/θT
What is the equation for Velocity?
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Sum of the forces= Objects Mass x Objects acceleration
What is Newton’s second law?
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A way to illustrate how energy changes throughout a scenario, all qualitative/no numbers.
What is an LOL diagram?
|
Linear
Angular
What are the two types of momentum?
|
RPMs
If a speed-o-meter measures linear velocity in a car, what measures the angular velocity?
|
|
Xf = X0 + V0t + 1/2At^2
What is the Kinematic equation regarding final position?
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Open= Mass and energy move freely through
Closed= Only energy is able to freely move through Isolated= Neither Energy or Mass can flow through
What are the Three different systems and why are they different?
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The energy transferred to or from an object via the application of force along a displacement.
What is Work done on a system?
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A force applied over a duration of time
What is Impulse?
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Force that causes an object to rotate.
What is torque?
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The x graph should be a constant velocity in the positive x direction due to negligible air resistance, the y will be a downward concave graph heading to -y.
A cannon shoots a cannon ball off a cliff a distance y above the ground, describe the velocity vs time graph of the x and y motion of the cannon ball as it falls.
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Fs = -kx
What is the equation for Hooke’s Law/Spring Force?
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energy can neither be created nor be destroyed; it can only be internally converted from one form to another if the forces doing work on the system are conserved.
Describe the Conservation of mechanical energy.
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Car 1= 105,000 Kgm/s
Car 2= 13,000 Kgm/s Difference= 92,000 Kgm/s
What is the momentum difference of a car moving at 70 m/s with a mass of 1500kg with people vs moving at 20 m/s with a empty car mass of 650 kg?
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The distribution of mass in an object changes the rotational inertia as mass may or may not be even.
What is special about rotational inertia when looking at mass?
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tan^-1=(-30m/8m)
The angle is ~-75.1 degrees
What is the angle of decline of the cannon ball at Vy=-30m and Vx=8m?
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1- Draw Free body Diagram 2- Break forces into components 3- Redraw free body diagram 4- Use Newtons 2nd law to sum forces 5- sum forces perpendicular to question 4
What are the 5 steps to making a free body diagram?
|
5400 Joules
What is the Kinetic energy of a ball being pushed at 30 m/s and a mass of 12 kg?
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Neither, it os its own thing
Is Momentum considered a force or energy?
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Θf = θi+ ω0t + 1/2αt^2
ωf = ωi+ αt ωf^2 = ωi^2 + 2αΔθ
What are the three kinematic equations in angular form?
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