What is the change in gravitational potential energy of a 50-kg person who climbs a flight...
What is the change in gravitational potential energy of a 67.0 kg student as they climb from ground level to a height of 10.7 meters. Use g= 9.81 m/s2
A student of mass 47.3 kg climbs up the stairs in the Physics Department, with a vertical height change 3.2 metres. What is the change in gravitational potential energy? Give your answer in Joules, to 2 significant figures
Question 10 U Av Lv v A 15.0-kg person climbs stairs, gaming 250 meters in height Find the most done so accomplish this task I B 12pt v Praga
2. -1 points 16 7,1.P.002. 0/6 Submissions Used A 82.0 kg person climbs stairs, gaining 3.20 meters in height. Find the work done (in J) to accomplish this task P O6 Submissions Used ronstant speed, assuming friction averages 245 N.
12 A 60.0-kg woman who runs up a 3.00 m high flight of stairs in 3.50 s, starting from rest but having a final speed of 2.00 m/s? What is the final potential energy. A) 126 J B) 110W C) 153 J D) 120 J E) 140 J 13 A 100 g ball move upward with a velocity of 10 m/s from ground level in a free fall movement. What is the kinetic energy for the ball at ground level?
As part of her morning jog, a 65-kg woman runs up a flight of steps with a vertical height of 10 meters. She accomplishes this task in 15.0 seconds. a) What is the weight of the woman? b) How much work did the woman use to climb the stairs? c) What is her increase in potential energy? d) How much power did she use to climb the stairs? e) How much horsepower did she use?
a 65-kg man goes on a hike and climbs 110m high hill. (a) What is the increase in the gravitational potential energy of the man? (b) Where does this energy come from? (c) The man's body is 20 percent efficient; that is, for every 20 J that are converted to mechnical energy, 100 J of chemical energy are expended, with 80 J going into thermal energy. How much chemical energy is expended by the man during the climb?
The figure is a graph of the gravitational potential energy and kinetic energy of a 70 g yo-yo as it moves up and down on its string. The acceleration of gravity is 9.81 m/s2 . a) By what amount does the mechanical energy of the yo-yo change after 6.0 s? Answer in units of J. b) What is the speed of the yo-yo after 4.5 s? Answer in units of m/s. c) What is the maximum height of the yo-yo?...
3) 3) A 20-kg object is resting at the top of a table 1.6 m above ground level. The object is then picked up and moved to a height of 8.7 m above ground level. What is the change in the gravitational potential energy of this object? 4) 4) A car on a roller coaster starts at zero speed at an elevation above the ground of 26 m. It coasts down a slope, and then climbs a hill. The top...
A 80kg mountain climber ascends (climbs) 10 meters up a steep cliff in 50 seconds. The power rating of the mountain climber is approximatelyw. a. 0.16 b. 1.60 c. 16 d. 160 e. 400 f. 4000 g. 40000 h. 400000 View Objectives Quit Mission Save Mission An object starts froam rest with a potential energy of 600 1 and free-falls towards the ground After it has fallen to a height of ove-fourth of its original height its total mechanical ergy...