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1. ### Calculate Instantaneous Velocity?

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

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

2. ### The velocity function, in feet per second, is given for a particle moving along a straight line. v(t) = 9t − 5, 0 ≤ t ≤ 3?

...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

3. ### Physics Help?

...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

4. ### A balloon, rising vertically with a velocity of 16 ft/ sec , releases a sandbag at the instant when the balloon is 48 ft above the ground.?

(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

5. ### Physics help?!?

...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

6. ### physics. award for clearest answer!!?

a = -g*μ = -0.28*9.806 = -2.75 m/ sec ^2  d = (0-(51/3,6)^2 / (-2.75*2) = 36.5 m

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

7. ### A car and a truck are initially moving in the same direction at 20m/ sec with the truck 38m ahead. The car accelerates at a constant speed of?

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

8. ### I need help!?

... = ( 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

9. ### Physics help! ?

...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

10. ### Suppose that the system in Question 3 has a frictional force of 0.056 N. Determine the acceleration of the system. Show your work....?

...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