Practice Problems
Projectiles Released from Ground Level at an Angle
Directions:
On this worksheet, every projectile has a net vertical displacement of s
_{y}
= 0. That is, the projectiles begin and end at the same height.
omit
Question 1
A soccer ball is kicked so that is has a hang time of 4 seconds and hits the ground 21 meters down the field, what was the velocity of the soccer ball when it was kicked?
39.2 m/sec
5.25 m/sec
19.6 m/sec
20.3 m/sec
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Question 2
A cannon is fired on flat ground so that its shell comes back to the ground 427 meters away. If the cannon ball is in the air for only 8 seconds, with what velocity was it fired?
39.2 m/sec
78.4 m/sec
66.2 m/sec
53.4 m/sec
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Question 3
A softball is struck up into the air with a hang time of 5.7 sec and is caught 7 meters away. What was the velocity of the softball just as it was struck by the bat?
1.23 m/sec
39.9 m/sec
55.9 m/sec
28.0 m/sec
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Question 4
A catapult launches its mass at a speed of 31 m/sec at an angle of 21 degrees. How long will the mass stay in the air if its release-height and landing-height are the same?
28.9 sec
1.13 sec
2.27 sec
6.3 sec
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Question 5
An arrow is shot up into the air at 15.5 m/sec at an angle of 46 degrees. What is the range of the arrow if its release-height and impact-height are the same?
6.3 meters
24.5 meters
11.15 meters
10.77 meters
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William A. Hilburn
All rights reserved.
Application Programmer
Mark Acton