Author Question: The force of gravity on a bowling ball rolling along a horizontal surface doesn't change its speed ... (Read 73 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?

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.

Did you know?

GI conditions that will keep you out of the U.S. armed services include ulcers, varices, fistulas, esophagitis, gastritis, congenital abnormalities, inflammatory bowel disease, enteritis, colitis, proctitis, duodenal diverticula, malabsorption syndromes, hepatitis, cirrhosis, cysts, abscesses, pancreatitis, polyps, certain hemorrhoids, splenomegaly, hernias, recent abdominal surgery, GI bypass or stomach stapling, and artificial GI openings.

Did you know?

Signs and symptoms of a drug overdose include losing consciousness, fever or sweating, breathing problems, abnormal pulse, and changes in skin color.

Did you know?

The most dangerous mercury compound, dimethyl mercury, is so toxic that even a few microliters spilled on the skin can cause death. Mercury has been shown to accumulate in higher amounts in the following types of fish than other types: swordfish, shark, mackerel, tilefish, crab, and tuna.

Did you know?

IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.

For a complete list of videos, visit our video library