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alex41 [277]
3 years ago
15

Which statements best describe the motion of Car A and Car B? Check all that apply. Car A and Car B are both moving toward the o

rigin. Car A and Car B are moving in opposite directions. Car A is moving faster than Car B. Car A and Car B started at the same location. Car A and Car B pass each other at the crossover point on the graph.
Physics
2 answers:
Lera25 [3.4K]3 years ago
6 0

Answer: car b

Explanation:

mojhsa [17]3 years ago
3 0

Answer:

Car A and Car B pass each other at the crossover point on the graph

.Car A and Car B are moving in opposite directions.

Car A is moving faster than Car B. these are the ansers

Explanation:

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The non-relativistic formula for low speed  v < 0.1c is:

K.E = 0.5mv^2 = 0.5 * 235 * (7)^2 = 5757.5 J
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It is well known that for a hollow, cylindrical shell rolling without slipping on a horizontal surface, half of the total kineti
miskamm [114]

<u>The fraction of the total kinetic energy that is rotational for a uniform sphere is</u><u> 1/3.</u>

<h3>What is kinetic energy?</h3>
  • Kinetic energy is a form of energy that an object or a particle has by reason of its motion.
  • If work, which transfers energy, is done on an object by applying a net force, the object speeds up and thereby gains kinetic energy.

Option (a) f = \frac{0.5}{1.5} = \frac{1}{3}

Option (b) uniform sphere

            f = \frac{2}{7}

C) uniform hollow sphere

           f = \frac{2}{5}

D) uniform hollow cylinder with inner radius R/2 and outer radius R

           f = \frac{5}{13}

that fraction of total energy as rotational energy is given as

     f = \frac{\frac{1}{2}Iw^{2}  }{\frac{1}{2}mv^{2} + \frac{1}{2} Iw^{2}   }

   f =  \frac{m k^{2}(\frac{v^{2} }{R^{2} })  }{mv^{2} + m k^{2}(\frac{v^{2} }{R^{2} }  )}

    f =  \frac{\frac{k^{2} }{R^{2} } }{1 + \frac{k^{2} }{R^{2} } }

A) uniform Solid cylinder for cylinder we know that

         \frac{k\\ ^{2} }{R^{2} }  = 0.5

          f = \frac{0.5}{1.5}  = \frac{1}{3}

B) uniform Sphere for sphere we know that

        \frac{k^{2} }{R^{2} } = \frac{2}{5} \\

    f = \frac{0.4}{1.4} = \frac{2}{7}

C) uniform hollow sphere for hollow sphere we know that

            \frac{k^{2} }{R^{2} } = \frac{2}{3}

         f = \frac{\frac{2}{3} }{\frac{5}{3} } = \frac{2}{5}

D) uniform hollow cylinder with inner radius R/2 and outer radius R for annular cylinder

             \frac{k^{2} }{R^{2} } = \frac{5}{8}

            f = \frac{\frac{5}{18} }{\frac{13}{8} } = \frac{5}{13}

Learn more about kinetic energy

brainly.com/question/999862

#SPJ4

<u />

<u>The complete question is -</u>

It is well known that for a hollow, cylindrical shell rolling without slipping on a horizontal surface, half of the total kinetic energy is translational and half is rotational. What fraction of the total kinetic energy is rotational for the following objects rolling without slipping on a horizontal surface?Part AA uniform solid cylinder.Part BA uniform sphere.Part CA thin-walled hollow sphere.Part DA hollow, cylinder with outer radius R and inner radius R/2.

       

4 0
2 years ago
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