Question
Asked Oct 17, 2019
A. Rank the balls from greatest to least by their horizontal components of velocity. Rank from greatest to least. To rank items as equivalent, overlap them.
 
B. Rank the balls from greatest to least by their accelerations when they reach the top of their paths. Rank from greatest to least. To rank items as equivalent, overlap them.
A ball is thrown upward at the velocities and angles shown in A to D.
10 m/s
37°
10 m/s
45
53
10 m/s
30°
A
B
Part A
Bank the balls from
greatest to least by their vertical components of velocity
20 m/s
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A ball is thrown upward at the velocities and angles shown in A to D. 10 m/s 37° 10 m/s 45 53 10 m/s 30° A B Part A Bank the balls from greatest to least by their vertical components of velocity 20 m/s

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Expert Answer

Step 1

consider the diagram below, which shows the vertical component, vv and horizontal component, v­­­H of the velocity.

7
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7

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Step 2

Use the above diagram to find horizontal component of velocity by using the definition of cosθ ,

VH
cos e
V vcose
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VH cos e V vcose

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Step 3

Plug the necessary values to calculate the horizo...

vcose
(10 m/s)(cos 37)
8 m/s
Bcose
=(20 m/s)(cos 53°)
12 m/s
c=vcose
=(10 m/s)(cos 45°)
7 m/s
vcose
(10 m/s)(cos 30°
-8.67 m/s
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vcose (10 m/s)(cos 37) 8 m/s Bcose =(20 m/s)(cos 53°) 12 m/s c=vcose =(10 m/s)(cos 45°) 7 m/s vcose (10 m/s)(cos 30° -8.67 m/s

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