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 3.3 seconds and hits the ground 31 meters down the field, what was the velocity of the football when it was kicked?
16.2 m/sec
9.39 m/sec
18.7 m/sec
32.3 m/sec
omit
Question 2
A cannon is fired on flat ground so that its shell comes back to the ground 428 meters away. If the cannon ball is in the air for only 6.6 seconds, with what velocity was it fired?
64.7 m/sec
64.8 m/sec
72.5 m/sec
32.3 m/sec
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Question 3
A softball is struck up into the air with a hang time of 4.9 sec and is caught 10.3 meters away. What was the velocity of the softball just as it was struck by the bat?
50.5 m/sec
2.10 m/sec
48.0 m/sec
24.1 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 31 degrees. How long will the mass stay in the air if its release-height and landing-height are the same?
1.84 sec
3.69 sec
16.7 sec
30.1 sec
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Question 5
An arrow is shot up into the air at 17.6 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?
11.04 meters
30.7 meters
13.64 meters
9.5 meters
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William A. Hilburn
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