Physics word problem see below

In 1984, Don Cain threw a flying disk that stayed aloft for 16.7 s. Suppose Cain ran up a staircase during this time, reaching a height of 18.4 m. If his mass was 72.0 kg, how much power was needed for Cain's ascent?
in Word Problem Answers by

Your answer

Your name to display (optional):
Privacy: Your email address will only be used for sending these notifications.
Anti-spam verification:
To avoid this verification in future, please log in or register.

1 Answer

Power is force*distance/time.
The force is the pull of gravity on Cain's body. This is his gravitational mass (72kg)*acceleration due to gravity, which on earth is 9.81m/sec/sec. So the force is 72*9.81 kg of weight in newtons.
This weight is lifted through a distance of 18.4m for 16.7 seconds.
The power to do this is therefore 72*9.81*18.4/16.7=778.22 watts.
by Top Rated User (1.2m points)

Related questions

1 answer
Word problem see below
asked Jan 5, 2012 in Word Problem Answers by mimosa Level 1 User (240 points) | 601 views
1 answer
word problem see below
asked Oct 26, 2011 in Word Problem Answers by anonymous | 718 views
1 answer
please see word problem below
asked Jan 4, 2012 in Algebra 1 Answers by anonymous | 659 views
1 answer
see full question below
asked Nov 1, 2012 in Word Problem Answers by anonymous | 684 views
0 answers
Please See below
asked Nov 14, 2011 in Word Problem Answers by Aswift Level 1 User (120 points) | 576 views
1 answer
physics problem
asked May 27, 2013 in Algebra 1 Answers by anonymous | 913 views
1 answer
Word problem below
asked Dec 3, 2014 in Word Problem Answers by Heather | 566 views
3 answers
Please help sove the word problem below
asked Dec 19, 2011 in Word Problem Answers by anonymous | 1.1k views
1 answer
See in description below
asked Sep 19, 2017 in Other Math Topics by anonymous | 341 views
1 answer
see below for question
asked Dec 13, 2014 in Statistics Answers by Patti | 1.8k views
1 answer
see below for question
asked Oct 7, 2014 in Pre-Algebra Answers by Damitres | 597 views
1 answer
See below for the question. Too much to post here.
asked Dec 8, 2013 in Algebra 1 Answers by wjgechter Level 1 User (140 points) | 593 views
Welcome to MathHomeworkAnswers.org, where students, teachers and math enthusiasts can ask and answer any math question. Get help and answers to any math problem including algebra, trigonometry, geometry, calculus, trigonometry, fractions, solving expression, simplifying expressions and more. Get answers to math questions. Help is always 100% free!

Most popular questions within the last 3000 days

  1. 50+50-25X0+2+2= (19)
  2. it takes 10 road workers 5 days to complete a road repair when working 2 hours a day.Working at the same pace,how many days will it take 2 people working 5 hours a day to finish it? (3)
  3. Solve 15 -1(12÷4+1)? (4)
  4. 8:4(5+2) (3)
  5. How can i represent 1/3; 3/3; 7/3; 10/3 and 15/3 on a number line? (1)

Most popular tags

87,516 questions
100,279 answers
2,420 comments
732,951 users