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Lesechka [4]
3 years ago
5

Heliocentric theory:

Physics
2 answers:
AfilCa [17]3 years ago
8 0
The answer is The Heliocentric Theory was a theory that the planets revolved around the sun

Answer: Proposed that the sun was the center of the solar system.
xz_007 [3.2K]3 years ago
5 0

Answer:

C) proposed that the sun was the center of the solar system      

Explanation:

The Heliocentric model was proposed by Nicholaus Copernicus which describes the sun at the center of the solar system. The Earth with other planets and moons revolves around it in concentric orbits. Later, Kepler gave planetary laws which describes the planetary orbits as elliptical. Before heliocentric model, Ptolemy's geocentric model was popular which considered Earth as the center but it was proven incorrect with the Heliocentric model.

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On a touchdown attempt, 95.00 kg running back runs toward the end zone at 3.750 m/s. A 113.0 kg line-backer moving at 5.380 m/s
dsp73

Answer:

(a) 1.21 m/s

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Explanation:

m1 = 95 kg, u1 = - 3.750 m/s, m2 = 113 kg, u2 = 5.38 m/s

(a) Let their velocity after striking is v.

By use of conservation of momentum

Momentum before collision = momentum after collision

m1 x u1 + m2 x u2 = (m1 + m2) x v

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(b) Kinetic energy before collision = 1/2 m1 x u1^2 + 1/2 m2 x u2^2

                                               = 0.5 ( 95 x 3.750 x 3.750 + 113 x 5.38 x 5.38)

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Kinetic energy after collision = 1/2 (m1 + m2) v^2                

                                                = 0.5 (95 + 113) x 1.21 x 1.21 = 152.27 J

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