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Question
Which of the following statements is nottrue?A) Displacement has a direction and a magnitude.
B) Acceleration has a magnitude only.
C) Speed has a magnitude only.
D) Velocity has a magnitude and a direction.
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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B) torque.
C) linear momentum.
D) angular momentum.
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A) 0.0 N
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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.
D) to the solar system only.
E) on Earth only.
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In the equation A = B/C, the A and B are said to be _______________ proportional.
A) directly
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Newton's third law of motion states that the force pair acting on different objects consists of two forces that
A) are under the influence of gravity.
B) are equal and in the same direction.
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Q:
______________ principle explains why objects float or sink in a fluid.
A) Newton's
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C) Bernoulli's
D) Archimedes'
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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
B) 1.6 N
C) 0.63 N
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Q:
A spacecraft in space keeps going at the same velocity, even without firing its rockets, in accordance with the _______________ law of motion.
A) fourth
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Q:
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A mass is accelerated when ______________ acts upon the mass.
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
A) changes most rapidly near the top of its trajectory.
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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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A freely falling object
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If an object moves with constant velocity,
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D) its distance traveled per unit time is constant.
E) all of these
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