the gravitational force between two objects is ____ proportional to the product of the masses of the objects
1 answer:
Explanation:
There exist a force of gravity between two masses. It is given by :
...........(1)
Where
G is the universal gravitational constant
m₁ and m₂ are masses
r is the distance between them
From equation (1) it is clear that the force of gravity between two masses is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.
So, the gravitational force between two objects is <em><u>directly proportional</u></em> to the product of the masses of the objects
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Answer:
The mass of the child + skateboard is 50 kg
Explanation:
In this problem, we can apply Newton's second law:
F = ma
where
F is the net force on a system
m is the mass of the system
a is the acceleration of the system
In this problem, our system is the child + the skateboard. The net force on them is
F = 75 N
and their acceleration is
So we can re-arrange the equation above to find their combined mass: