« previous next »

Author Question: Two tennis balls fall through the air from a tall building. One of them is filled with lead pellets. ... (Read 146 times)

corkyiscool3328

  • Hero Member
  • *****
  • Posts: 539
on: Jul 29, 2018
Two tennis balls fall through the air from a tall building. One of them is filled with lead pellets. The ball to reach the ground first is the
 
  A) regular ball.
  B) lead-filled ball.
  C) same for both

Question 2

A ball thrown straight upward takes 10 seconds for its up-and-down round trip. Because of air resistance, the time taken for the ball just to go up is
 
  A) less than 5 s.
  B) 5 s.
  C) more than 5 s.


jharrington11

  • Sr. Member
  • ****
  • Posts: 365
Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: B

Answer to Question 2

Answer: A


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

corkyiscool3328

  • Hero Member
  • *****
  • Posts: 539
Reply #2 on: Jul 29, 2018
Thank you!


jharrington11

  • Sr. Member
  • ****
  • Posts: 365
Reply #3 on: Jul 29, 2018
Always glad to help...


« previous next »
 

Did you know?

A serious new warning has been established for pregnant women against taking ACE inhibitors during pregnancy. In the study, the risk of major birth defects in children whose mothers took ACE inhibitors during the first trimester was nearly three times higher than in children whose mothers didn't take ACE inhibitors. Physicians can prescribe alternative medications for pregnant women who have symptoms of high blood pressure.

Did you know?

Chronic necrotizing aspergillosis has a slowly progressive process that, unlike invasive aspergillosis, does not spread to other organ systems or the blood vessels. It most often affects middle-aged and elderly individuals, spreading to surrounding tissue in the lungs. The disease often does not respond to conventionally successful treatments, and requires individualized therapies in order to keep it from becoming life-threatening.

Did you know?

During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).

Did you know?

The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."

Did you know?

When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).

Deforestation and increased road-building in the Amazon Rainforest are a significant concern because Deforestation and increased road-building in the Amazon Rainforest are a significant concern because
Fall Fall
Overview of the cell’s principal chemical building blocks Overview of the cell’s principal chemical building blocks
In this 1900 cartoon, oil baron John D. Rockefeller holds the White House in the palm of his hand wh In this 1900 cartoon, oil baron John D. Rockefeller holds the White House in the palm of his hand wh
Sterile cotton balls Sterile cotton balls
Subduction and Mountain Building Subduction and Mountain Building
Video: Pasteur's Experiment

For a complete list of videos, visit our video library