« previous next »

Author Question: Two blocks, joined by a string, have masses of 6.0 and 9.0 kg. They rest on a frictionless, ... (Read 50 times)

RYAN BANYAN

  • Hero Member
  • *****
  • Posts: 563
on: Jul 28, 2018
Two blocks, joined by a string, have masses of 6.0 and 9.0 kg. They rest on a frictionless, horizontal surface. A second string, attached only to the 6.0-kg block, has horizontal force = 45 N applied to it. Both blocks accelerate. Find the tension in the string between the blocks.
 a. 18 N
  c. 12 N
  b. 27 N
  d. 9.0 N

Question 2

A stone is thrown downward from a cliff. Take up to be the positive direction. Which of the following statements is true about the stone?
 a. The velocity is negative, the acceleration is negative, and the speed is negative.
  b. The velocity is positive, the acceleration is negative, and the speed is positive.
  c. The velocity is negative, the acceleration is negative, and the speed is positive.
  d. The velocity is positive, the acceleration is positive, and the speed is positive.


jliusyl

  • Sr. Member
  • ****
  • Posts: 328
Reply #1 on: Jul 28, 2018
Answer to Question 1

B

Answer to Question 2

C


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Chronic marijuana use can damage the white blood cells and reduce the immune system's ability to respond to disease by as much as 40%. Without a strong immune system, the body is vulnerable to all kinds of degenerative and infectious diseases.

Did you know?

An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.

Did you know?

During pregnancy, a woman is more likely to experience bleeding gums and nosebleeds caused by hormonal changes that increase blood flow to the mouth and nose.

Did you know?

The use of salicylates dates back 2,500 years to Hippocrates's recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

Did you know?

The human body's pharmacokinetics are quite varied. Our hair holds onto drugs longer than our urine, blood, or saliva. For example, alcohol can be detected in the hair for up to 90 days after it was consumed. The same is true for marijuana, cocaine, ecstasy, heroin, methamphetamine, and nicotine.

This 11-month old girl demonstrates one of the abilites of a child of this age group - creating a to This 11-month old girl demonstrates one of the abilites of a child of this age group - creating a to
Weather Characteristics of North American Air Masses Weather Characteristics of North American Air Masses
Air-mass thunderstorms—mT air masses Air-mass thunderstorms—mT air masses
Structure of a Fatty Acid Fatty acids are the building blocks of some lipids Structure of a Fatty Acid Fatty acids are the building blocks of some lipids
A forklift pushes a 100-kg crate, starting from rest, exerting a horizontal force of magnitude ... A forklift pushes a 100-kg crate, starting from rest, exerting a horizontal force of magnitude ...
An electron is accelerated from rest through a potential difference of 3750 V. It enters a ... An electron is accelerated from rest through a potential difference of 3750 V. It enters a ...
Video: Carpal Tunnel Syndrome

For a complete list of videos, visit our video library