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Question
The gravitational pull of Earth acting on an object is zero when the objectA) has zero acceleration.
B) is in free fall.
C) is midway between Earth and the Moon.
D) is in orbit around Earth.
E) none of these
Answer
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Related questions
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An indication of an object's inertia is given by its ______________.
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A change in motion requires a(n) ____________.
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C) linear momentum.
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Newton's law of universal gravitation is believed to be applicable
A) to the Milky Way only.
B) on Earth and the Moon only.
C) throughout the universe.
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E) on Earth only.
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In the equation A = B/C, the A and B are said to be _______________ proportional.
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Newton's third law of motion states that the force pair acting on different objects consists of two forces that
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______________ principle explains why objects float or sink in a fluid.
A) Newton's
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The buoyant force of an object is equal to the ______________ of the ______________ it displaces.
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If an object of mass 8 kg has an acceleration of 5 m/s2, what is the unbalanced force acting on it?
A) 40 N
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A spacecraft in space keeps going at the same velocity, even without firing its rockets, in accordance with the _______________ law of motion.
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A) a balanced force
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If an object has a constant velocity, then its acceleration is ______________.
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The straight-line distance and direction between two points are, together, called ______________.
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A projectile's vertical velocity component
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B) changes at a constant rate.
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Q:
The magnitude of the acceleration of an object moving in a circle at constant speed is
A) inversely proportional to the speed squared.
B) inversely proportional to the speed.
C) inversely proportional to the radius of the circle squared.
D) inversely proportional to the radius of the circle.
Q:
The direction of the acceleration of an object moving in a circle at constant speed is
A) changing, but pointing in a predictable direction.
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An object travels in a circle of radius 10.0 m with a constant speed of 3.0 m/s. What is the direction of its acceleration?
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B) Normal to the plane of the circle
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Q:
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A freely falling object
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