Part 2 of 11 - Horizontal and Vertical Components of the Velocity Vector Joey wonders why the horizontal component of velocity remains constant, and asks Meixiu the reason. Which of Meixiu's responses is correct? O "For a baseball with no air resistance, there is no acceleration in the horizontal direction, so the baseball moves to the right at a constant rate." O "For a baseball with no air resistance, the only horizontal acceleration is the gravitational acceleration, so the baseball moves to the right at a constant rate." "The acceleration due to gravity is exactly offset by the acceleration due to air resistance." O "The baseball has constant acceleration acting on it in the horizontal direction." Submit Skip (you cannot come back) Additional Materials
Part 2 of 11 - Horizontal and Vertical Components of the Velocity Vector Joey wonders why the horizontal component of velocity remains constant, and asks Meixiu the reason. Which of Meixiu's responses is correct? O "For a baseball with no air resistance, there is no acceleration in the horizontal direction, so the baseball moves to the right at a constant rate." O "For a baseball with no air resistance, the only horizontal acceleration is the gravitational acceleration, so the baseball moves to the right at a constant rate." "The acceleration due to gravity is exactly offset by the acceleration due to air resistance." O "The baseball has constant acceleration acting on it in the horizontal direction." Submit Skip (you cannot come back) Additional Materials
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Please answer section 2 by indicating the correct choice
Transcribed Image Text:Part 2 of 11 - Horizontal and Vertical
Components of the Velocity Vector
Joey wonders why the horizontal component of velocity remains constant, and asks Meixiu the reason. Which
of Meixiu's responses is correct?
O "For a baseball with no air resistance, there is no acceleration in the horizontal direction, so the
baseball moves to the right at a constant rate."
O "For a baseball with no air resistance, the only horizontal acceleration is the gravitational acceleration,
so the baseball moves to the right at a constant rate."
"The acceleration due to gravity is exactly offset by the acceleration due to air resistance."
O "The baseball has constant acceleration acting on it in the horizontal direction."
Submit
Skip (you cannot come back)
Additional Materials
![Prelecture Exploration: Velocity
Components in Projectile Motion
Meixiu is at the park with her friend Joey from physics class. They want to understand projectile motion, so
they are using a pitching machine to launch baseballs, and observe the baseball's trajectories for different
scenarios. Later, they use this simulation to help them understand what they observed.
In this simulation, the friends can observe the parabolic path of a projectile launched from the origin. The
velocity vector, as well as its horizontal and vertical components, is shown at all points along the path. They
can use the sliders to adjust the initial speed and launch angle of the projectile, then click "fire" to launch.
They note that in this simulation, air resistance is ignored, although in reality air resistance does play a role in
a projectile's motion.
Initial Speed
40 m/s
y (m)
50
45
40
35
30
25
20
15
10
Vyi
x (m)
Launch Angle
50 degrees
90
75
60
15
Time =
0.00s
fire
pause
clear
Click here to open the simulation in a new window.
Part 1 of 11 - Horizontal and Vertical Components of the Velocity Vector
Meixiu asks Joey to describe the horizontal and vertical components of the velocity vector along the baseball's
path. Which of Joey's responses is correct?
] "The x component remains constant."
"The x component equals the initial y component, and the y component equals the initial x
component."
"The final y component is equal to the initial y component in magnitude and direction."
"Just before the baseball hits the ground, both components are equal in magnitude and opposite in
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Transcribed Image Text:Prelecture Exploration: Velocity
Components in Projectile Motion
Meixiu is at the park with her friend Joey from physics class. They want to understand projectile motion, so
they are using a pitching machine to launch baseballs, and observe the baseball's trajectories for different
scenarios. Later, they use this simulation to help them understand what they observed.
In this simulation, the friends can observe the parabolic path of a projectile launched from the origin. The
velocity vector, as well as its horizontal and vertical components, is shown at all points along the path. They
can use the sliders to adjust the initial speed and launch angle of the projectile, then click "fire" to launch.
They note that in this simulation, air resistance is ignored, although in reality air resistance does play a role in
a projectile's motion.
Initial Speed
40 m/s
y (m)
50
45
40
35
30
25
20
15
10
Vyi
x (m)
Launch Angle
50 degrees
90
75
60
15
Time =
0.00s
fire
pause
clear
Click here to open the simulation in a new window.
Part 1 of 11 - Horizontal and Vertical Components of the Velocity Vector
Meixiu asks Joey to describe the horizontal and vertical components of the velocity vector along the baseball's
path. Which of Joey's responses is correct?
] "The x component remains constant."
"The x component equals the initial y component, and the y component equals the initial x
component."
"The final y component is equal to the initial y component in magnitude and direction."
"Just before the baseball hits the ground, both components are equal in magnitude and opposite in
luuluululuuluuluuluuluul
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