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 football is kicked so that is has a hang time of 4 seconds and hits the ground 30 meters down the field, what was the velocity of the football when it was kicked?
21.0 m/sec
7.50 m/sec
19.6 m/sec
39.2 m/sec
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Question 2
A cannon is fired on flat ground so that its shell comes back to the ground 454 meters away. If the cannon ball is in the air for only 8 seconds, with what velocity was it fired?
56.8 m/sec
69.0 m/sec
39.2 m/sec
78.4 m/sec
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Question 3
A softball is struck up into the air with a hang time of 5.3 sec and is caught 10 meters away. What was the velocity of the softball just as it was struck by the bat?
51.9 m/sec
26.0 m/sec
1.89 m/sec
53.0 m/sec
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Question 4
A catapult launches its mass at a speed of 30.8 m/sec at an angle of 30 degrees. How long will the mass stay in the air if its release-height and landing-height are the same?
12.1 sec
1.57 sec
3.14 sec
26.7 sec
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Question 5
An arrow is shot up into the air at 15.4 m/sec at an angle of 51 degrees. What is the range of the arrow if its release-height and impact-height are the same?
11.97 meters
7.3 meters
23.7 meters
9.69 meters
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William A. Hilburn
All rights reserved.
Application Programmer
Mark Acton