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 2.1 seconds and hits the ground 27 meters down the field, what was the velocity of the football when it was kicked?
20.6 m/sec
10.3 m/sec
12.86 m/sec
16.5 m/sec
omit
Question 2
A cannon is fired on flat ground so that its shell comes back to the ground 417 meters away. If the cannon ball is in the air for only 4.2 seconds, with what velocity was it fired?
99.3 m/sec
41.2 m/sec
101.4 m/sec
20.6 m/sec
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Question 3
A softball is struck up into the air with a hang time of 3.6 sec and is caught 9 meters away. What was the velocity of the softball just as it was struck by the bat?
35.3 m/sec
32.4 m/sec
2.50 m/sec
17.8 m/sec
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Question 4
A catapult launches its mass at a speed of 35.1 m/sec at an angle of 27 degrees. How long will the mass stay in the air if its release-height and landing-height are the same?
13.0 sec
3.25 sec
1.63 sec
31.3 sec
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Question 5
An arrow is shot up into the air at 17.6 m/sec at an angle of 41 degrees. What is the range of the arrow if its release-height and impact-height are the same?
31.1 meters
11.51 meters
6.8 meters
13.25 meters
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William A. Hilburn
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Mark Acton