In order to determine the effect, we will first consider the mathematical expression of Newton's law of gravitation:
F = (Gm₁m₂)/r², where G is the gravitational constant, m represents the mass of a body, and r is the separation between the two bodies.
It is visible that the force is directly proportional to the product of the two masses. Therefore, if one mass is kept constant and the other is tripled, the force will also triple. Thus, the force will be:
26 * 3
= 78 Newtons
Nothing on that list of choices is a requirement.
Answer:
8.0 Ns
Explanation:
Change in momentum is given as:
Final momentum - Initial momentum
= m*v - m*u
Where m = mass of ball
v = final velocity
u = initial velocity
Change in momentum = (2.0 * 3.0) - (2.0 * 7.0)
= 6.0 - 14.0 = -8.0 Ns
The magnitude will be |-8.0| = 8.0 Ns
Answer: the earth
Explanation: Earth exerts a gravitational pull on the moon 80 times stronger than the moon's pull on the Earth. Over a very long time, the moon's rotations created fiction with the Earth's tugging back, until the moon's orbit and rotational locked with Earth.
and that's why the earth pulls the moon
