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Question 1:

What is the universal gravitational constant denoted by?

A) G
B) F
C) W
D) M

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Explanation: The correct answer is A) G. The universal gravitational constant is denoted by the symbol G. It is a fundamental constant that appears in the equation for calculating the gravitational force between two objects.

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Question 2:

What is the SI unit of the universal gravitational constant?

A) N
B) m/s
C) kg
D) N·m^2/kg^2

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Explanation: The correct answer is D) N·m^2/kg^2. The SI unit of the universal gravitational constant is N·m^2/kg^2. It represents the force of gravitational attraction between two objects with a mass of 1 kg each and a separation of 1 meter.

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Question 3:

What is the weight of an object?

A) The force with which the object is pushed against a surface
B) The force with which the object is pulled towards the center of the Earth
C) The mass of the object
D) The force with which the object is accelerated

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Explanation: The correct answer is B) The force with which the object is pulled towards the center of the Earth. Weight is the force experienced by an object due to gravity. It is the force with which the object is pulled towards the center of the Earth or any other celestial body.

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Question 4:

What is the relationship between weight and mass?

A) Weight depends on mass
B) Mass depends on weight
C) Weight and mass are independent of each other
D) Weight and mass are the same thing

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Explanation: The correct answer is A) Weight depends on mass. Weight and mass are related but different quantities. Weight depends on the mass of an object and the strength of the gravitational field it is in. Mass, on the other hand, is a measure of the amount of matter in an object and remains constant regardless of the gravitational field.

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Question 5:

What is the direction of the gravitational force on an object in free fall?

A) Downwards, towards the ground
B) Upwards, away from the ground
C) Sideways, parallel to the ground
D) There is no gravitational force on an object in free fall

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Explanation: The correct answer is A) Downwards, towards the ground. In free fall, an object is subjected to the force of gravity. The gravitational force acts in the downward direction, towards the center of the Earth.