NULG (Part 2)

What is the value of G (gravitational constant) in the universal law of gravitation?

• 6.67 x 10^-11 N(m/kg)^2

• 10 m/s^2

• 9.78 m/s^2

• 9.8 m/s^2

What does the 'r' represent in the universal law of gravitation equation?

• Radius of the orbit

• Radius of the Earth

• Distance from the centers of the objects

• Rate of acceleration

According to Newton's third law, how do the forces between two objects like Earth and Moon behave?

• One is stronger than the other

• They are equal but opposite in direction

• They do not affect each other

• They are equal and in the same direction

What does the gravitational force between two objects depend on?

• Their colors

• Their surface areas

• Their temperatures

• Their masses and the distance between them

What is the gravitational field strength on the surface of the Earth?

• 10 m/s^2

• 9.8 kg/N

• 9.8 m/s^2

• 6.67 x 10^-11 N(m/kg)^2

Why is Newton's law of gravitation considered universal?

• Because it was discovered by Newton

• Because it only works on Earth

• Because it only applies to the universe

• Because it applies everywhere in the universe

What happens to the value of 'g' (acceleration due to gravity) as you move very far away from the surface of the Earth?

• It remains constant

• It fluctuates

• It increases

• It decreases

What is the force of gravity also referred to as in physics?

• Mass

• Volume

• Weight

• Density

How does the gravitational force between two objects change if the distance between them is doubled?

• It doubles

• It quadruples

• It remains the same

• It reduces to a quarter

What is the significance of the gravitational field strength equation derived from the universal law of gravitation?

• It calculates the speed of an object in orbit

• It determines the weight of an object on any planet

• It helps to find the force per mass at a point in a gravitational field

• It measures the temperature of a celestial body