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If an object travels 100 feet in 2 seconds, what is the object's appro
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13 Oct 2022, 10:31
13 Oct 2022, 10:31
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90% (01:39) correct
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If an object travels 100 feet in 2 seconds, what is the object's approximate speed in miles per hour? (Note: 1 mile = 5280 feet)
(A) 3.4
(B) 3.8
(C) 34
(D) 38
(E) 344
(A) 3.4
(B) 3.8
(C) 34
(D) 38
(E) 344
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GRE Math Essentials (2022)
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GRE Math Essentials (2022)
GRE Geometry Formulas
GRE - Math Book
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Joined: 20 Feb 2017
Posts: 2506
Given Kudos: 1055
GPA: 3.39
Re: If an object travels 100 feet in 2 seconds, what is the object's appro
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17 Oct 2022, 01:02
17 Oct 2022, 01:02
1
Expert Reply
Conversion questions are best dealt using a one step approach.
Let me illustrate: Let's say we want to convert a speed of 100 miles/hour to feet/sec.
Speed = 100 miles/1 hour = (100 x 5280 feet)/(1 x 3600 sec)= 146.67 feet/sec
So, simply convert the units to what you want along with the conversion factor.
Let's take your question now.
If an object travels 100 feet in 2 seconds, what is the object’s approximate speed in miles per hour? (Note: 1 mile = 5280 feet)
Speed = 100 feet/2 sec = (100×1/5280 miles)/(2×1/3600 hour) = 5x3600 miles/528 hr = 34 miles/hr
Note: Since 1 mile = 5280 feet, hence here to convert we say 1 foot = 1/5280 miles.
Answer: C
Let me illustrate: Let's say we want to convert a speed of 100 miles/hour to feet/sec.
Speed = 100 miles/1 hour = (100 x 5280 feet)/(1 x 3600 sec)= 146.67 feet/sec
So, simply convert the units to what you want along with the conversion factor.
Let's take your question now.
If an object travels 100 feet in 2 seconds, what is the object’s approximate speed in miles per hour? (Note: 1 mile = 5280 feet)
Speed = 100 feet/2 sec = (100×1/5280 miles)/(2×1/3600 hour) = 5x3600 miles/528 hr = 34 miles/hr
Note: Since 1 mile = 5280 feet, hence here to convert we say 1 foot = 1/5280 miles.
Answer: C
Re: If an object travels 100 feet in 2 seconds, what is the object's appro
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27 Jun 2025, 14:19
27 Jun 2025, 14:19
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Thanks to another GRE Prep Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).
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