« previous next »

Author Question: Calculate the minimum average power output necessary for a person to run up a 12.0 m long hillside, ... (Read 80 times)

luminitza

  • Hero Member
  • *****
  • Posts: 555
on: Jul 29, 2018
Calculate the minimum average power output necessary for a person to run up a 12.0 m long hillside, which is inclined at 25.0 above the horizontal, in 3.00 s. You can neglect the person's kinetic energy.
 
  Express your answer in horsepower. (1 hp = 746 W)
  A) 1.24 hp
  B) 2.93 hp
  C) 1.86 hp
  D) 0.740 hp

Question 2

A 7.0-kg rock is subject to a variable force given by the equation F(x) = 6.0 N - (2.0 N/m)x + (6.0 N/m2)x2 If the rock initially is at rest at the origin, find its speed when it has moved 9.0 m.
 
  What will be an ideal response?


djofnc

  • Sr. Member
  • ****
  • Posts: 318
Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: A

Answer to Question 2

Answer: 20 m/s


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Studies show that systolic blood pressure can be significantly lowered by taking statins. In fact, the higher the patient's baseline blood pressure, the greater the effect of statins on his or her blood pressure.

Did you know?

After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.

Did you know?

Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.

Did you know?

Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.

Did you know?

A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.

The features found in a long bone. The features found in a long bone.
Sixteen-pin OBD II DLC with terminals identified. Scan tools use the power pin (16) ground pin (4) ... Sixteen-pin OBD II DLC with terminals identified. Scan tools use the power pin (16) ground pin (4) ...
Small local hydroelectric power generators have more future potential Small local hydroelectric power generators have more future potential
The average weight gain between Thanksgiving and New Year's Day is about a pound The average weight gain between Thanksgiving and New Year's Day is about a pound
When a 2.75-kg fan, having blades 18.5 cm long, is turned off, its angular speed decreases ... When a 2.75-kg fan, having blades 18.5 cm long, is turned off, its angular speed decreases ...
The minimum number of moles of oxygen needed to completely consume 4 moles of C3H8O is ... The minimum number of moles of oxygen needed to completely consume 4 moles of C3H8O is ...
Video: Pneumonia Animation

For a complete list of videos, visit our video library