part1 Flashcards
How to find magnitude, |v| = ?
√(x^2 + y^2)
What is Newton’s First Law of motion?
A particle will continue to MOVE in a STRAIGHT LINE at CONSTANT SPEED unless acted upon by a NET EXTERNAL FORCE.
What is Vf = ? (no displacement)
Kinematic equations
Vf = Vi + a*t
What is ∆x = ? (no final velocity)
Kinematic equation
∆x = Xo +Vo*t + (1/2)at²
What is Vf² = ? (no time)
Kinematic Equation
Vf² = Vi² + 2a(∆x)
or
Vf² = Vi² + 2a(x-xnot)
What is ∆x = ? (no acceleration)
∆x = 1/2 (Vi + Vf)*t
What does WANTF mean?
Weight, Applied, Normal, Tension, Friction
How to find θ = ? (if y is opposite side of angle)
θ = arctan(y/x)
What is Newton’s Second Law of motion?
SUM(ExternalForces) = mA
What is Newton’s Third Law of motion?
If body A applies a force of some type upon body B, then body B must apply the SAME TYPE of FORCE upon body A that is EQUAL IN MAGNITUDE but OPPOSITE in Direction.
What is Circular motion V = ?
(2πr)/T
What is Circular acceleration ac = ?
(V^2)/r
What is Circular Force (centripetal force) Fc = ?
(mV^2)/(r)
At (4,3), how do you find θ and |v|?
θ = arctan(3/4)
|v| = √(4^2 + 3^2)
At (5,θ), how do you find x and y?
x = rcos(θ)
y = rsin(θ)
A = (3,4,2) B=(1, -2, 5). Find A⋅B
5
A = (3,4,2) B=(1, -2, 5). Find AxB
(24, -13, -10)
A = (3,4,2) B=(1, -2, 5). Find A+B
(4,2,7)
What does (static friction) Fs = ?
μs*N
