General Knowledge
What is the difference between a vector and a scalar quantity?
Vector quantity: 3 components <x,y,z>
Scalar quantity: single value
According to Newton's first law, if an object does not interact with anything or if the effects of its interactions cancel each other out, then its velocity (and therefore momentum) must be...
constant
Which direction best indicates the direction of the ball's average velocity from point A to point B?
-->
2447.8 m/s
What are the two conditions a vector describes?
What is Newton's third law?
When a pendulum is at its lowest point, what does its free body diagram look like?
draw on board
<-0.935, -0.341, 0.0946> m/s
A way to find the direction of a cross product of 2 vectors.
Place had along r and curl fingers in the direction of the force.
Thumb up - counterclockwise force - positive direction
Thumb down - clockwise force - negative direction
What is the momentum principle?
delta p = F net x delta t
A mass is connected to a spring, and rests on a very low friction surface. You stretch the spring, then release it at time t=0, and the system oscillates horizontally. How is the kinetic and potential energy of the spring-mass system as a function of time represented on a graph?
draw on board
What is the dot product of <13, -9, 12> N and <3, 2, 2> m?
45 J
What is an alternative formula to the cross-product formula?
lallblsino
What is the Work-Energy Principle?
delta E = W
For an object moving in circular motion at constant speed, the direction of the net force on the object is always...
in the radial direction toward the center of the circle
What is the cross product of <3, 3, 2> and <6, 8, 9>?
<11, -15, 6>