« previous next »

Author Question: A 1000-kg truck moving at 10 m/s that brakes to a stop in 5 s has an average braking force of A) ... (Read 54 times)

vinney12

  • Hero Member
  • *****
  • Posts: 586
on: Jul 29, 2018
A 1000-kg truck moving at 10 m/s that brakes to a stop in 5 s has an average braking force of
 
  A) 1000 N.
  B) 2000 N.
  C) 3000 N.
  D) 4000 N.
  E) 5000 N.

Question 2

You hold a 5-newton rock motionless in your hand. Regarding the forces on this rock,
 
  A) the net force on the rock is zero.
  B) the downward force of gravity is balanced by the upward force of air resistance.
  C) there are no forces of any kind acting on the rock, because it is not moving.
  D) the net force on the rock is 5 newtons, directed downward.
  E) the net force on the rock is 5 newtons, directed upward.


scottmt

  • Sr. Member
  • ****
  • Posts: 322
Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: B

Answer to Question 2

A


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.

Did you know?

The types of cancer that alpha interferons are used to treat include hairy cell leukemia, melanoma, follicular non-Hodgkin's lymphoma, and AIDS-related Kaposi's sarcoma.

Did you know?

A headache when you wake up in the morning is indicative of sinusitis. Other symptoms of sinusitis can include fever, weakness, tiredness, a cough that may be more severe at night, and a runny nose or nasal congestion.

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?

Illness; diuretics; laxative abuse; hot weather; exercise; sweating; caffeine; alcoholic beverages; starvation diets; inadequate carbohydrate consumption; and diets high in protein, salt, or fiber can cause people to become dehydrated.

Pupil assessment; B, moving penlight directly in front of pupil. Pupil assessment; B, moving penlight directly in front of pupil.
Average Normal Blood Pressure Readings Average Normal Blood Pressure Readings
How to find the average value of a function (Part 2) How to find the average value of a function (Part 2)
Find the resultant for the following force combinations Find the resultant for the following force combinations
Question about Resultant of gravitational force? Question about Resultant of gravitational force?
Question about Resultant of gravitational force? Question about Resultant of gravitational force?
Video: Types of disease resistance: innate defenses & immunity

For a complete list of videos, visit our video library