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 2.9 seconds and hits the ground 28 meters down the field, what was the velocity of the football when it was kicked?
17.2 m/sec
14.2 m/sec
9.66 m/sec
28.4 m/sec
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Question 2
A cannon is fired on flat ground so that its shell comes back to the ground 436 meters away. If the cannon ball is in the air for only 5.8 seconds, with what velocity was it fired?
56.8 m/sec
80.4 m/sec
28.4 m/sec
75.2 m/sec
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Question 3
A softball is struck up into the air with a hang time of 3.2 sec and is caught 9.3 meters away. What was the velocity of the softball just as it was struck by the bat?
31.4 m/sec
2.91 m/sec
15.9 m/sec
29.8 m/sec
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Question 4
A catapult launches its mass at a speed of 39.9 m/sec at an angle of 28 degrees. How long will the mass stay in the air if its release-height and landing-height are the same?
17.9 sec
35.2 sec
1.91 sec
3.82 sec
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Question 5
An arrow is shot up into the air at 20.0 m/sec at an angle of 45 degrees. What is the range of the arrow if its release-height and impact-height are the same?
40.6 meters
14.11 meters
10.2 meters
14.11 meters
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William A. Hilburn
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Application Programmer
Mark Acton