9. The speed of an object moving in a straight line increases from 10 m/s to 20 m/s in 2 s. What is the average acceleration? a) 5 m/s² in the direction of motion of the object b) 5 m/s² in the direction perpendicular to the motion of the object c) 5 m/s² in the direction opposite to the motion of the object d) √5 m/s² in the direction of the motion of the object 10. The motion of a projectile is described in a coordinate system. At a particular instant, the magnitude of the horizontal component of velocity is 5 m/s and the magnitude of the vertical component of the velocity is 8 m/s. What is correct about the object? a) The projectile is at its maximum height. b) The projectile is about to hit the ground c) The projectile is ascending d) The projectile has hit the ground

College Physics
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ISBN:9781285737027
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter2: Motion In One Dimension
Section: Chapter Questions
Problem 71AP: An ice sled powered by a rocket engine sum from rest on a large frozen lake and accelerates at + 40...
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9. The speed of an object moving in a straight line increases from 10 m/s to 20 m/s in 2 s. What is the
average acceleration?
a) 5 m/s² in the direction of motion of the object
b) 5 m/s² in the direction perpendicular to the motion of the object
c) 5 m/s² in the direction opposite to the motion of the object
d) √5 m/s² in the direction of the motion of the object
10. The motion of a projectile is described in a coordinate system. At a particular instant, the
magnitude of the horizontal component of velocity is 5 m/s and the magnitude of the vertical
component of the velocity is 8 m/s. What is correct about the object?
a) The projectile is at its maximum height.
b) The projectile is about to hit the ground
c) The projectile is ascending
d) The projectile has hit the ground
Transcribed Image Text:9. The speed of an object moving in a straight line increases from 10 m/s to 20 m/s in 2 s. What is the average acceleration? a) 5 m/s² in the direction of motion of the object b) 5 m/s² in the direction perpendicular to the motion of the object c) 5 m/s² in the direction opposite to the motion of the object d) √5 m/s² in the direction of the motion of the object 10. The motion of a projectile is described in a coordinate system. At a particular instant, the magnitude of the horizontal component of velocity is 5 m/s and the magnitude of the vertical component of the velocity is 8 m/s. What is correct about the object? a) The projectile is at its maximum height. b) The projectile is about to hit the ground c) The projectile is ascending d) The projectile has hit the ground
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