<u>Answer</u>
4.8212×10⁻¹¹ N
<u>Explanation</u>
The gravitational force F, between 2 masses m₁ and m₂ is given by:
F = (Gm₁m₂)/d²
Where G = 6.673 x 10⁻¹¹ N m²/kg² and d is the distance between the 2 masses.
F = (Gm₁m₂)/d²
= (6.673 x 10⁻¹¹ × 0.425 × 0.425)/0.500²
= 1.2053×10⁻¹¹/0.25
= 4.8212×10⁻¹¹ N
Answer: Option A; 9.8 m/s^2
Explanation:
When an object is in the air, and there is no air resistance acting on the object, the only force that will act on the object is the gravitational force (on the vertical axis).
Then, if the only force acting on the object is the gravitational force, the acceleration of the object will be equal to the gravitational acceleration.
We know that the gravitational acceleration is equal to:
g = 9.8m/s^2
Then the acceleration on the vertical axis will be equal to:
a(t) = 9.8m/s^2
The correct option is the first one:
A. 9.8 m/s^2
Answer: Option A
Explanation:
Acceleration is defined as the rate of change of the vellocity.
Then, if the acceleration is equal zero, the object has a constant velocity or a velocity equal to zero (also constant, of course)
Then, te correct option would be option A; resting, because an object resting has instantaneuos acceleration of zero.
F=M×A
F=3 ×15
F=45N
so the force is 45 N
Hello there,
The word 'repeatable' means, the scientific experiment is repeated in the same way, with the same methods and analysis.
Hope this helps :))
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