College Physics
College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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Physics. Please help!
2.
Select ALL correct statements about the acceleration of an object in projectile motion near the
surface of the earth (ignore air resistance).
The acceleration in the horizontal direction is zero.
The acceleration in the horizontal direction is constant and has magnitude ≈ 9.8 m/s².
The acceleration in the horizontal direction depends upon the object's mass.
The acceleration in the vertical direction is zero.
The acceleration in the vertical direction is constant and has magnitude ≈ 9.8 m/s².
The acceleration in the vertical direction depends upon the object's mass.
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Transcribed Image Text:2. Select ALL correct statements about the acceleration of an object in projectile motion near the surface of the earth (ignore air resistance). The acceleration in the horizontal direction is zero. The acceleration in the horizontal direction is constant and has magnitude ≈ 9.8 m/s². The acceleration in the horizontal direction depends upon the object's mass. The acceleration in the vertical direction is zero. The acceleration in the vertical direction is constant and has magnitude ≈ 9.8 m/s². The acceleration in the vertical direction depends upon the object's mass.
1.
The earth goes around the sun in a circular orbit with a constant speed. Select the most correct
statement (just one) about the earth's acceleration and velocity.
A. Since the earth moves with a constant speed, its acceleration is zero.
B. The earth's acceleration is always perpendicular to its velocity, so the velocity constantly changes
direction, but its magnitude is constant.
C. The earth's acceleration is always parallel to its velocity, so the velocity constantly changes direction,
but its magnitude is constant.
D. The earth's acceleration is always opposite to its velocity, so the velocity constantly changes direction,
but its magnitude is constant.
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Transcribed Image Text:1. The earth goes around the sun in a circular orbit with a constant speed. Select the most correct statement (just one) about the earth's acceleration and velocity. A. Since the earth moves with a constant speed, its acceleration is zero. B. The earth's acceleration is always perpendicular to its velocity, so the velocity constantly changes direction, but its magnitude is constant. C. The earth's acceleration is always parallel to its velocity, so the velocity constantly changes direction, but its magnitude is constant. D. The earth's acceleration is always opposite to its velocity, so the velocity constantly changes direction, but its magnitude is constant.
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