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Description
Flashcards by Adriana Vincelli-Joma, updated more than 1 year ago
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Created by Adriana Vincelli-Joma
over 3 years ago
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| 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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