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 2.2 seconds and hits the ground 21 meters down the field, what was the velocity of the football when it was kicked?
10.8 m/sec
21.6 m/sec
9.55 m/sec
14.4 m/sec
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Question 2
A cannon is fired on flat ground so that its shell comes back to the ground 408 meters away. If the cannon ball is in the air for only 4.4 seconds, with what velocity was it fired?
43.1 m/sec
95.2 m/sec
92.7 m/sec
21.6 m/sec
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Question 3
A softball is struck up into the air with a hang time of 5.4 sec and is caught 7 meters away. What was the velocity of the softball just as it was struck by the bat?
26.5 m/sec
37.8 m/sec
52.9 m/sec
1.30 m/sec
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Question 4
A catapult launches its mass at a speed of 30.2 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?
1.10 sec
6.0 sec
28.2 sec
2.21 sec
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Question 5
An arrow is shot up into the air at 15.1 m/sec at an angle of 44 degrees. What is the range of the arrow if its release-height and impact-height are the same?
10.86 meters
5.6 meters
10.49 meters
23.3 meters
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William A. Hilburn
All rights reserved.
Application Programmer
Mark Acton