d = 2t² – 4t v = dd/dt = 4t – 4 v(3) = 4•3 – 4 = 8 something/

**sec**1 Answers · Science & Mathematics · 23/11/2020

...you can split the | v | into pieces... it is = 0 at t = 5/9

**sec**so 2 integrals ... -1 * ∫ ( 9t- 5 )dt from 0 to 5/9...2 Answers · Science & Mathematics · 22/11/2020

...m3)/2*V^2 V = √((3*9,806*(19-7.8)-32*3)/((19+7.8+14)/2) = 3.4 m/

**sec**^2 Through dynamics accelerating force AF = (m3-m1)*g-32...3 Answers · Science & Mathematics · 21/11/2020

(a) solve y = y₀ + v₀t + ½at² 0 = 48 + 16t - 16t² has roots at t = -1.3 s ← ignore and t = 2.30 s ← solution (b) v = v₀ + at = 16ft/s - 32ft/s²*2.3s = -57.689 ft/s OR v = √(u² + 2gh) = √(16² + 2*32*48) ft/s = -57.689 ft/s...

1 Answers · Science & Mathematics · 17/11/2020

...velocity Voy Vo = Voy*sen 37° = 25*0.6 = 15.0 m/

**sec**How long (t) will it take the ball to reach its highest point...2 Answers · Science & Mathematics · 17/11/2020

a = -g*μ = -0.28*9.806 = -2.75 m/

**sec**^2 d = (0-(51/3,6)^2 / (-2.75*2) = 36.5 m1 Answers · Science & Mathematics · 17/11/2020

Answer: 140m Observe motion of car relative to truck. For observer in truck, initially they both seem at rest, then car starts to accelerate and moves from 38m behind to 11m in front, apparently covering distance s = 38 + 11 = 49m. The time required is t...

1 Answers · Science & Mathematics · 21/11/2020

... = ( 2*Vo*sin@ ) / g = ( 2*40 * sin (40˚) ) / 9.8 = 5.247

**sec**[ proj. motion eqn ] at that point the arrow has Velocity...2 Answers · Science & Mathematics · 13/11/2020

...he cleared the crossbar time to travel 38 m, t = 38 m / 16.06 m/s = 2.366

**sec**which means it fell for 2.366 s – 1.820 s = 0.546 s how far from...1 Answers · Science & Mathematics · 10/11/2020

...to question 3 acceleration a = g*(m1-m2)/(m1+m2) = 9.8(1.06-1)/(2.06) = 0.2854 m/

**sec**^2 answer to question 4 accel. a' = (9.8*(1.06-1)-0.056)/(2.06) = 0.2583 m/**sec**...2 Answers · Science & Mathematics · 01/11/2020