This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: A box is launched up a frictionless incline with an angle of elevation . The maximum height reached ... (Read 69 times)

burchfield96

  • Hero Member
  • *****
  • Posts: 610
on: Jul 28, 2018
A box is launched up a frictionless incline with an angle of elevation . The maximum height reached by the box is h. The box is again launched up the incline with the same initial speed it had before, but this time the angle of elevation has been increased to . How does the maximum height H reached this time by the box compare with the previous value h?
 a. H = h b. H > h
  c. H < h d. H = ((sin)/(sin))

Question 2

A girl and her bicycle have a total mass of 42 kg. At the top of the hill her speed is 4.00 m/s. The hill is 14.3 m high and 112 m long. If the force of friction as she rides down the hill is 20 N, what is her speed at the bottom?
 a. 4.00 m/s
  b. 15.8 m/s
  c. 13.8 m/s
  d. 63.1 m/s
  e. She stops before she reaches the bottom.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

johnharpe

  • Sr. Member
  • ****
  • Posts: 338
Reply #1 on: Jul 28, 2018
Answer to Question 1

a

Answer to Question 2

c


burchfield96

  • Hero Member
  • *****
  • Posts: 610
Reply #2 on: Jul 28, 2018
Thanks


johnharpe

  • Sr. Member
  • ****
  • Posts: 338
Reply #3 on: Jul 28, 2018
Welcome :)


« previous next »
 

Did you know?

There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.

Did you know?

The human body produces and destroys 15 million blood cells every second.

Did you know?

A headache when you wake up in the morning is indicative of sinusitis. Other symptoms of sinusitis can include fever, weakness, tiredness, a cough that may be more severe at night, and a runny nose or nasal congestion.

Did you know?

Hip fractures are the most serious consequences of osteoporosis. The incidence of hip fractures increases with each decade among patients in their 60s to patients in their 90s for both women and men of all populations. Men and women older than 80 years of age show the highest incidence of hip fractures.

Did you know?

It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.

How to solve angle of depression problems in right triangles How to solve angle of depression problems in right triangles
How to quickly determine the maximum or minimum value of a quadratic equation in standard form How to quickly determine the maximum or minimum value of a quadratic equation in standard form
The low-elevation coastal zone in Bangladesh is under threat of inundation by 2100 The low-elevation coastal zone in Bangladesh is under threat of inundation by 2100
Find the two integers that have a sum of 20 and a maximum product Find the two integers that have a sum of 20 and a maximum product
An additive model for the inheritance of height in the Potsdam Guards. In this example, the guards a An additive model for the inheritance of height in the Potsdam Guards. In this example, the guards a
Quadrilateral with measurements and obtuse angle Quadrilateral with measurements and obtuse angle
Video: Amniocentesis and CVS Animation

For a complete list of videos, visit our video library