Newton never said that, and there's really no such thing as the "force of an object".
Newton said that the rate of change of an object's momentum is equal to the net force ACTING ON the object. These days, almost everybody says that the object's acceleration, multiplied by its mass, is equal to the net force ACTING ON it. This statement is entirely equivalent to the other one.
Newton's 2nd law applies everywhere, to simply all objects.
Answer:
Explanation:
The candela (symbol: cd) is the SI base unit of luminous intensity, which is defined as the power emitted by a light source in a certain direction, weighted by the luminosity function. A standard candle produces light with a luminous intensity of around 1 cd.
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Answer:
4E
Explanation:
From the question given above, the following data were obtained:
Initial elongation (e₁) = 4 cm = 4/100 = 0.04 m
Initial energy (E₁) = E
Final elongation (e₂) = 0.04 + 0.04 = 0.08 m
Final energy (E₂) =?
The energy stored in a s spring is given by:
E = ½Ke²
Where
E => is the energy
K => is the spring constant
e => is the elongation
From:
E = ½Ke²
Energy is directly proportional to the elongation. Thus,
E₁/e₁² = E₂/e₂²
With the above formula, we can obtain the final energy as follow:
Initial elongation (e₁) = 0.04 m
Initial energy (E₁) = E
Final elongation (e₂) = 0.08 m
Final energy (E₂) =?
E₁/e₁² = E₂/e₂²
E / 0.04² = E₂ / 0.08²
E / 0.0016 = E₂ / 0.0064
Cross multiply
0.0016 × E₂ = 0.0064E
Divide both side by 0.0016
E₂ = 0.0064E / 0.0016
E₂ = 4E
Therefore, the final energy is 4 times the initial energy i.e 4E
The answer is 0 because of the velocity “u” doesn’t A