Practice Problems
Freely Falling Bodies with Linear Trajectories
Directions:
On this worksheet you will practice working with
freely falling bodies
released vertically as a special example of uniformly accelerated motion.
omit
Question 1
A ball is thrown straight down off a 20-meter balcony at a speed of 7 m/sec. How many seconds will it take to hit the ground at the base of the balcony?
2.04 sec
2.80 sec
1.43 sec
2.86 sec
omit
Question 2
How
fast
will the ball in
Question #1
be traveling just as it impacts the ground?
26.8 m/sec
14.0 m/sec
19.8 m/sec
21.0 m/sec
omit
Question 3
If the ball in
Question #1
had instead been thrown straight upwards at a speed of 7 m/sec off the 20-meter balcony, how much time would it have taken to strike the ground at the base of the balcony?
3.57 sec
2.04 sec
2.86 sec
2.86 sec
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Question 4
True or False. The ball in
Question #3
will strike the ground moving at a faster speed than the ball released in
Question #1
.
False
True
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Question 5
How high
above the release point
did the ball in
Question #3
rise during its trajectory?
22.50 meters
17.50 meters
0.51 meters
2.50 meters
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Question 6
From the instant when the ball was tossed upwards in
Question #3
, how much time was required before the ball once again passes through its release position?
1.43 seconds
1.43 seconds
1.43 seconds
2.14 seconds
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Question 7
A walnut drops from the top branch of a walnut tree and falls a total distance of 17 meters. After one second, it clears all of the tree's foliage. How much additional time passes before it strikes the ground at the base of the tree?
1.32 seconds
1.22 seconds
0.86 seconds
0.93 seconds
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Question 8
What was the walnut's final velocity just as it impacted with the ground?
-18.3 m/sec
-4.3 m/sec
-9.1 m/sec
-8.5 m/sec
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