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  1. a. v² = u² + 2gh = (6m/ s )² + 2*9.8m/s²*5.0m = 134 m²/s² impact v = 11.6 m... --  "find the time it takes to compress the spring" -- it' s no easy task. ω = √(k/m) = √(5000kg/s² / 10kg) = 22.4 rad/ s As far...

    3 Answers · Science & Mathematics · 04/12/2020

  2. final KE = (104 - 30) J = 74 J = ½ * 3kg * v² final v = 7 m/ s Hope this helps!

    1 Answers · Science & Mathematics · 04/12/2020

  3. Easiest is kinematics: v² = u² + 2gh = (1m/ s )² + 2 * 9.8m/s² * 79m = 1549 m²/s² v = 39 m/ s (or 40 m/ s if they're being a stickler about significant digits)

    1 Answers · Science & Mathematics · 04/12/2020

  4. ... = ½m(maxV)² = ½ * 3000kg * (35m/ s )² = 1.8e6 J d) friction work = PE - KE = 2.2e5 J...

    1 Answers · Science & Mathematics · 04/12/2020

  5. ... T = 365.25 days = 365.25 * 86400s = 3.156×10⁷ s ω = 2π / 3.156×10⁷ = 1.991×10⁻⁷ rad/ s a = 1.5×10¹¹...

    2 Answers · Science & Mathematics · 04/12/2020

  6. ... = 1.27 m velocity at bottom v = 2*L/t = 2*4.6m / 2.2s = 4.18 m/ s and so assuming there is no slipping, ω = v/r = 4.18m/ s ...

    2 Answers · Science & Mathematics · 04/12/2020

  7. 1) centripetal acceleration ≤ 6.98 * g (104m/ s )² / r ≤ 6.98 * 9.8m/s² r ≥ 158 m 2) the centripetal force F = m * 6.98 * g = 5750 N Hope this helps!

    1 Answers · Science & Mathematics · 03/12/2020

  8. ... * (π/4)(100m)² / 200m Q' = 5890 W = 5890 J/ s = 2.12e7 J/hr m' = Q' / Lf = 2.12e7J/hr / ...

    2 Answers · Science & Mathematics · 04/12/2020

  9. ...09 m ? v² = v₀² + 2ad v² = 0 + 2(5.4)(1.09) v = 3.44 m/ s m1 continues moving at this speed, slowed by gravity. h...

    1 Answers · Science & Mathematics · 03/12/2020

  10. time t = E/P = (m*g*h) / P = (14*9,806*106)/300 = 48.5 sec 

    2 Answers · Science & Mathematics · 03/12/2020

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