Author Question: The force of gravity on a bowling ball rolling along a horizontal surface doesn't change its speed ... (Read 71 times)

imanialler

  • Hero Member
  • *****
  • Posts: 539
The force of gravity on a bowling ball rolling along a horizontal surface doesn't change its speed because the force is
 
  A) small compared to the ball's weight.
  B) canceled by the normal force.
  C) perpendicular to its direction of motion.
  D) canceled by friction.

Question 2

What holds Earth satellites up so they don't crash into Earth?
 
  A) gravity
  B) centripetal force
  C) centrifugal force
  D) the absence of air resistance
  E) nothing, they continually fall fast enough around Earth not to crash



mjenn52

  • Sr. Member
  • ****
  • Posts: 351
Answer to Question 1

Answer: C

Answer to Question 2

Answer: E



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

The largest baby ever born weighed more than 23 pounds but died just 11 hours after his birth in 1879. The largest surviving baby was born in October 2009 in Sumatra, Indonesia, and weighed an astounding 19.2 pounds at birth.

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?

The most common childhood diseases include croup, chickenpox, ear infections, flu, pneumonia, ringworm, respiratory syncytial virus, scabies, head lice, and asthma.

Did you know?

More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.

Did you know?

Street names for barbiturates include reds, red devils, yellow jackets, blue heavens, Christmas trees, and rainbows. They are commonly referred to as downers.

For a complete list of videos, visit our video library