# Lesson 1 - avg =(d t t =(78 m 120 s = 0.65 m/s[E 5 S 3 Vf²...

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Lesson 1 1) Speed Reaction Distance no alcohol 4 bottles 5 bottles 17 m/s (60 km/h) 13.6 m 34.0 m 51.0 m 25 m/s (90 km/h) 20.0 m 50.0 m 75.0 m 33 m/s (120 km/h) 26.4 m 66.0 m 99.0 m 2) a) b) i) d t = (d 1 + d 2 ) = (22 m + 65 m) = 87 m ii) v = ( d \ t) = (87 m \ 120 s) = 0.73 m/s iii) c 2 = 22 2 + 65 2 – 2(22)(65)cos119 = +/- 78 m iv) v

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Unformatted text preview: avg = (d t \ t) = (78 m / 120 s) = 0.65 m/s [E 5 S] 3) Vf² = Vi² + 2aΔd = (22m/s)² + 2a(150m) = -1.6m/s² I put the value as a negative because the car was decelerating 4) Vf² = Vi² + 2aΔd 0 = (45 m/s)² + 2(-9.8m/s²) Δd Δd = (-2025) / (-19.6) Δd = 103 m...
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Lesson 1 - avg =(d t t =(78 m 120 s = 0.65 m/s[E 5 S 3 Vf²...

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