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The total downhill distance traveled by a skier moving at 20
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05 Aug 2018, 02:38
05 Aug 2018, 02:38
Expert Reply
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Question Stats:
57% (04:25) correct
42% (02:20) wrong based on 7 sessions
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The total downhill distance traveled by a skier moving at 20 mph, from the moment he spots the boulder until he successfully veers 10 feet to his right, is approximately what percent smaller than the total downhill distance traveled by a skier in the same situation who is moving at 50 mph?
A. 23
B. 35
C. 60
D. 77
E. 80
Re: The total downhill distance traveled by a skier moving at 20
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11 Aug 2018, 11:25
11 Aug 2018, 11:25
1
Several steps involved here.
We need to:
Calculate the distance traveled during reaction time and veering time for skier traveling 20mph.
Calculate the distance traveled during reaction time and veering time for skier traveling 50mph.
Divide the total distance traveled during reaction time and veering time for skier traveling 20mph by total distance traveled for skier traveling 50mph.
Realize that the question asks "what percent smaller" the distance for 20mph skier is, so the answer for our first calculation (23%) is not the answer to the question. The 20mph skier travels 23% of the distance of the 50mph skier, so the 20mph skier travels 77% smaller distance than the 50mph skier.
So the answer is D.
We need to:
Calculate the distance traveled during reaction time and veering time for skier traveling 20mph.
Calculate the distance traveled during reaction time and veering time for skier traveling 50mph.
Divide the total distance traveled during reaction time and veering time for skier traveling 20mph by total distance traveled for skier traveling 50mph.
Realize that the question asks "what percent smaller" the distance for 20mph skier is, so the answer for our first calculation (23%) is not the answer to the question. The 20mph skier travels 23% of the distance of the 50mph skier, so the 20mph skier travels 77% smaller distance than the 50mph skier.
So the answer is D.
Re: The total downhill distance traveled by a skier moving at 20
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08 Sep 2018, 15:11
08 Sep 2018, 15:11
Someone please explain this? I don't understand the graphs or the question
