« previous next »

Author Question: A ball is thrown straight upward with an initial speed of 30 m/s. Assuming there is no air ... (Read 158 times)

acc299

  • Hero Member
  • *****
  • Posts: 569
on: Jul 28, 2018
A ball is thrown straight upward with an initial speed of 30 m/s. Assuming there is no air resistance, how high does the ball go before falling back down?

Question 2

A bicyclist starts from rest at the top of a hill and rolls down the hill without pedaling. Assuming there is no friction and the bottom of the hill is 20 meters below the top, what is the bicyclist's speed at the bottom of the hill?


emsimon14

  • Sr. Member
  • ****
  • Posts: 344
Reply #1 on: Jul 28, 2018
Answer to Question 1

45.9 m

Answer to Question 2

19.8 m/s


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

People about to have surgery must tell their health care providers about all supplements they take.

Did you know?

Thyroid conditions may make getting pregnant impossible.

Did you know?

Over time, chronic hepatitis B virus and hepatitis C virus infections can progress to advanced liver disease, liver failure, and hepatocellular carcinoma. Unlike other forms, more than 80% of hepatitis C infections become chronic and lead to liver disease. When combined with hepatitis B, hepatitis C now accounts for 75% percent of all cases of liver disease around the world. Liver failure caused by hepatitis C is now leading cause of liver transplants in the United States.

Did you know?

The strongest synthetic topical retinoid drug available, tazarotene, is used to treat sun-damaged skin, acne, and psoriasis.

Did you know?

Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.

Upward transport of water in xylem. Upward transport of water in xylem.
Variation in the rate of evolution as a function of the strength of selection, assuming genetic drif Variation in the rate of evolution as a function of the strength of selection, assuming genetic drif
A flat-tip (straight-blade) screwdriver. The width of the blade should match the width of the slot ... A flat-tip (straight-blade) screwdriver. The width of the blade should match the width of the slot ...
Flexible cooling fan blades change shape as the engine speed changes. Flexible cooling fan blades change shape as the engine speed changes.
Aspergillosis fungal ball in the right lung. Aspergillosis fungal ball in the right lung.
A spaceship leaves Earth at a steady forward speed of 70% the speed of light. How fast relative ... A spaceship leaves Earth at a steady forward speed of 70% the speed of light. How fast relative ...
Video: T cell receptors

For a complete list of videos, visit our video library