« previous next »

Author Question: A ball tossed vertically upward rises, reaches its highest point, and then falls back to its ... (Read 157 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?

Historic treatments for rheumatoid arthritis have included gold salts, acupuncture, a diet consisting of apples or rhubarb, nutmeg, nettles, bee venom, bracelets made of copper, prayer, rest, tooth extractions, fasting, honey, vitamins, insulin, snow collected on Christmas, magnets, and electric convulsion therapy.

Did you know?

Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.

Did you know?

Fungal nail infections account for up to 30% of all skin infections. They affect 5% of the general population—mostly people over the age of 70.

Did you know?

All adverse reactions are commonly charted in red ink in the patient's record and usually are noted on the front of the chart. Failure to follow correct documentation procedures may result in malpractice lawsuits.

Did you know?

The human body produces and destroys 15 million blood cells every second.

Wound dehiscence, back Wound dehiscence, back
Dew-Point Thresholds Dew-Point Thresholds
. Calculate the net electric field at point B . Calculate the net electric field at point B
An aqueous solution has a normal boiling point of 103.0C. What is the freezing point of this ... An aqueous solution has a normal boiling point of 103.0C. What is the freezing point of this ...
Relationship Between the Atlas and the Axis. The Dens of the Axis Provides a Pivotal Point Around Wh Relationship Between the Atlas and the Axis. The Dens of the Axis Provides a Pivotal Point Around Wh
Allyl isothiocyanate, ball and stick model Allyl isothiocyanate, ball and stick model
Video: Baroreceptor Reflex

For a complete list of videos, visit our video library