The non-relativistic formula for low speed v < 0.1c is:
K.E = 0.5mv^2 = 0.5 * 235 * (7)^2 = 5757.5 J
Answer:
Newton's Cradle experiment perfectly demonstrates the law of conservation of momentum which states that in a closed system, momentum before the collision is equal to momentum after the collision of the system.
As the first ball swings in the air, it gains momentum. When it strikes the second ball, it loses momentum and second ball gains equal amount of momentum. The second ball transfers the momentum to third, then fourth and till the last. The last ball when gains the same momentum swings up in the air. This continues. This experiment is done in drag free condition. This means there is no loss of momentum or opposing forces present.
PV=nRT
(720/760)(0.200)=(0.800/x)(0.08206)(323.15)
(0.1894736842)=(0.800/x)(0.08206)(323.15)
.0071451809=(0.800/x)
x=MM=111.9635758 g/mol
<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) 
Option (b) uniform sphere

C) uniform hollow sphere

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

that fraction of total energy as rotational energy is given as



A) uniform Solid cylinder for cylinder we know that
= 0.5

B) uniform Sphere for sphere we know that


C) uniform hollow sphere for hollow sphere we know that


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


Learn more about kinetic energy
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<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.