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Uniform Acceleration. Galileo Galilei (1564-1642). Galileo Galilei. ≈ 1590 he began a book, De motu ("On motion"). He examined motion of objects rolling down inclined planes, s lowly falling. The effect of gravity, diluted. Uniform acceleration. Pg. 53 Sample Problem. s = 42. s = 0.
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Galileo Galilei • ≈ 1590 he began a book, De motu ("On motion"). • He examined motion of objects rolling down inclined planes, slowly falling. The effect of gravity, diluted.
Pg. 53 Sample Problem s = 42 s = 0 ∆t = 5.5 s Substitute Solve: ∆x = ? • Vi= 42 • Vf = 0 • ∆t = 5.5 s • ∆x = ? • ∆x = (Vi + Vf) ∆t Given: Unknown: Equation:
a = 4.8 s = 0 Pg. 55 Sample Problem t = 15 s Equation: ∆x = (Vf) ∆t Vf = a(∆t) Substitute Solve: ∆x = ? s = ? • Vi= 42 • a = 4.8 • ∆t = 5.5 s • Vf = ? • ∆x = ? Given: Unknown:
s = 4.30 • a = 3.0 Pg. 55 Practice Problem 2 t = 5.0 s ∆x = (Vf) ∆t Equation: Vf = a(∆t) s = ? Substitute Solve: ∆x = ? • Vi= 42 • a = 3.0 • ∆t = 5.5 s • Vf = ? • ∆x = ? Given: Unknown: