PHYS 200 Unit 3: Two-Dimensional Kinematics

Question	Answer
vector	quantity with both magnitude and direction
scalar	quantity with only magnitude
tail	starting point of vector
head	final pointed end of arrow
resultant	sum of two or more vectors
horizontal component	-component of vector A along x-axis -A_x = Acosθ
vertical component	-component of vector A along y-axis -A_y = Asinθ
magnitude of resultant	A = √(A_x)^2 + (A_y)^2 )
direction of resultant	θ = tan^-1(A_y/A_x)
projectile motion	motion of object thrown into air; subject to only acceleration of gravity
components of velocity	-v_x = vcosθ -v_y - vsinθ
horizontal motion of projectile	-x = x_0 + v_x t -v_x = v_x0
vertical motion of projectile	-y = y_0 + 1/2 (v_0y + v_y) t -v_y = v_0y - gt -y = y_0 + v_0y t - 1/2 g t^2 v_y^2 = v_0y^2 - 2g (y - y_0)
maximum height of projectile	h = (v_0y^2)/2g
range	-horizontal distance traveled by projectile -R = [v_0^2 * sin(2θ)]/g
relative velocity formula	v_ac = v_ab + v_bc

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	Created by Adriana Vincelli-Joma about 3 years ago