Question

which of the following are false about newtons law of universal gravitation?
select all that apply
a gravity is a force of repulsion between things that have mass.
b the strength of gravity between any two objects depends on their masses and the distance between them.
c the force of gravity is the same between all objects, regardless of their mass or distance apart.
d gravity only affects physical objects we can see.
e newtons law was the first scientific law that applied to the entire universe.

Explanation:

• Option a: Gravity is a force of attraction, not repulsion, between masses.
• Option b: This is a correct statement as per the formula \(F = G\frac{m_1m_2}{r^{2}}\) (where \(F\) is the gravitational force, \(G\) is the gravitational constant, \(m_1\) and \(m_2\) are the masses of two objects, and \(r\) is the distance between their centers).
• Option c: The force of gravity varies depending on mass (\(m_1,m_2\)) and distance (\(r\)) as shown in the formula \(F = G\frac{m_1m_2}{r^{2}}\).
• Option d: Gravity affects all objects with mass, including those we can't see (e.g., dark matter).
• Option e: This is a correct historical fact.

Answer:

A. Gravity is a force of repulsion between things that have mass.
C. The force of gravity is the same between all objects, regardless of their mass or distance apart.
D. Gravity only affects physical objects we can see.