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GalinKa [24]
3 years ago
8

Use newton's method to find the second and third approximation of a root of

Physics
1 answer:
Nina [5.8K]3 years ago
5 0
Please answer this question 

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A car increases its velocity from zero to 97 km/h in 8.4 s. What is its acceleration?
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Answer:

a=\frac{v-u}{t}

v=final velocity =97km/h(change to m/s) =26.9m/s NEVER FORGET TO DO THAT BECAUSE TIME IS GIVEN IN SECONDS

u=initial velocity  0 m/s

t=time 8.4s

a=\frac{26.9-0}{8.4}

a= 3.2m/2^{2}

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A boy drops a coin down a well that is 225 m deep. How long does it take the coin to hit the bottom of the well? please help
Nady [450]
<span>It takes 6.78 seconds for the coin to hit the bottom of the well. We can use the equation h = 0.5gt^2, where h is the height of the coin, g is the gravitational constant of 9.8m/s^2, and t is the time is takes for the coin to hit the bottom of the well. Solve for t to obtain 6.87 seconds.</span>
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Which does energy never do?
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3 years ago
A bucket filled with water has a mass of 23 kg and is attached to a rope, which in turn, is wound around a 0.050-m radius cylind
Cloud [144]

Answer:11.27 Nm

Explanation:

Given

mass of bucket with water is m=23\ kg

radius of cylinder r=0.05\ m

If the cylinder is not permitted to rotate

Torque is given by the product of Force and distance of force from axis of rotation

T=F\times r

where F=weight of bucket with water

F=mg

T=mg\times r

T=23\times 9.8\times 0.05

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5 0
3 years ago
A small object moves along the x-axis with acceleration ax(t) = −(0.0320m/s3)(15.0s−t). At t = 0 the object is at x = -14.0 m an
Ber [7]

Complete Question

A small object moves along the x-axis with acceleration ax(t) = −(0.0320m/s3)(15.0s−t)−(0.0320m/s3)(15.0s−t). At t = 0 the object is at x = -14.0 m and has velocity v0x = 7.10 m/s. What is the x-coordinate of the object when t = 10.0 s?

Answer:

The position of the object at t = 10s is  X  =  38.3 \  m

Explanation:

From the question we are told that

The acceleration along the x axis is  a_{x}t  =  -(0.0320\ m/s^3)(15.0 s- t)- (0.0320\ m/s^3)

  The position of the object at t = 0 is  x = -14.0 m

  The velocity at t = 0 s is  v_{0}x = 7.10 m/s

Generally from the equation for acceleration along x axis we have that

     a_x = \frac{dV_{x}}{dt}  = -0.032 (15- t)

=>   \int\limits  {dV_{x}} \, = \int\limits  {-0.032(15- t)} \, dt

=>   V_{x} = -0.032 [15t - \frac{t^2 }{2} ]+ K_1

At  t =0  s   and  v_{0}x = 7.10 m/s

=>   7.10  = -0.032 [15(0) - \frac{(0)^2 }{2} ]+ K_1

=>   K_1 = 7.10      

So  

      \frac{dX}{dt}  = -0.032 [15t - \frac{t^2 }{2} ]+ K_1

=>  \int\limits dX  = \int\limits [-0.032 [15t - \frac{t^2 }{2} ]+ K_1] }{dt}

=>  X  =  -0.032 [ 15\frac{t^2}{2}  - \frac{t^3 }{6} ]+ K_1t +K_2

At  t =0  s   and   x = -14.0 m

  -14  =  -0.032 [ 15\frac{0^2}{2}  - \frac{0^3 }{6} ]+ K_1(0) +K_2

=>   K_2 = -14

So

     X  =  -0.032 [ 15\frac{t^2}{2}  - \frac{t^3 }{6} ]+ 7.10 t -14

At  t = 10.0 s

      X  =  -0.032 [ 15\frac{10^2}{2}  - \frac{10^3 }{6} ]+ 7.10 (10) -14

=>   X  =  38.3 \  m

             

     

5 0
2 years ago
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