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3 years ago

Two objects with the same mass move with the same speed but in opposite directions. Compare their kinetic energies.

Physics

2 answers:

ddd [48]3 years ago

5 0

Answer:

A. Kinetic energies are equal.

Explanation:

The kinetic energy of the bodies will be equal since the mass and speed are the same.

Kinetic energy is the energy due to the motion of a body.

Mathematically;

K.E = $\frac{1}{2}$ m v²

m is the mass

v is the speed

The kinetic energy is a scalar quantity with no regard for direction.

snow_tiger [21]3 years ago

3 0

Answer:kinetic energies are equal

Explanation:

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Nesterboy [21]

Answer:

A) the ammeter is x

voltage across R₁ (left resistor) = 0.75 V

voltage across the right one = 0.3 V

C) 1.05 V

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From the diagram attached below;

A) Assuming the homes were wired in series, and one of the homes face short circuit then all the houses would face power cut but it doesn't happen. So they must be connected in parallel.

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x = 0.15 A

z = 0.3 V

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Then, voltage across R₁ (left resistor) = 5×(x)

= 5×0.15

= 0.75 V

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The total voltage of battery = 0.75+0.3 = 1.05 V

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