« previous next »

Author Question: A ball tossed vertically upward rises, reaches its highest point, and then falls back to its ... (Read 108 times)

mmm

  • Hero Member
  • *****
  • Posts: 558
on: Jul 29, 2018
A ball tossed vertically upward rises, reaches its highest point, and then falls back to its starting point. During this time the acceleration of the ball is always
 
  A) in the direction of motion.
  B) opposite its velocity.
  C) directed upward.
  D) directed downward.
  E) none of the above

Question 2

The time it takes a car to attain a speed of 30 m/s when accelerating from rest at 2 m/s2 is
 
  A) 2 s.
  B) 15 s.
  C) 30 s.
  D) 60 s.
  E) none of the above


GCabra

  • Sr. Member
  • ****
  • Posts: 331
Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: D

Answer to Question 2

Answer: B


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Approximately 500,000 babies are born each year in the United States to teenage mothers.

Did you know?

According to the Migraine Research Foundation, migraines are the third most prevalent illness in the world. Women are most affected (18%), followed by children of both sexes (10%), and men (6%).

Did you know?

Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).

Did you know?

The oldest recorded age was 122. Madame Jeanne Calment was born in France in 1875 and died in 1997. She was a vegetarian and loved olive oil, port wine, and chocolate.

Did you know?

According to animal studies, the typical American diet is damaging to the liver and may result in allergies, low energy, digestive problems, and a lack of ability to detoxify harmful substances.

Upward transport of water in xylem. Upward transport of water in xylem.
Risk for falls Risk for falls
Tai chi stance with front foot pointing straight ahead and back foot at 45° angle, heels in line, ... Tai chi stance with front foot pointing straight ahead and back foot at 45° angle, heels in line, ...
Finger pressure to a trigger point. Finger pressure to a trigger point.
Superficial friction with palms along back. Hands are perpendicular to the spine; apply friction ... Superficial friction with palms along back. Hands are perpendicular to the spine; apply friction ...
Per capita consumption of power is high in the developed world and highest in the United States Per capita consumption of power is high in the developed world and highest in the United States
Video: Heart sounds

For a complete list of videos, visit our video library