« 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 53 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?

The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.

Did you know?

A serious new warning has been established for pregnant women against taking ACE inhibitors during pregnancy. In the study, the risk of major birth defects in children whose mothers took ACE inhibitors during the first trimester was nearly three times higher than in children whose mothers didn't take ACE inhibitors. Physicians can prescribe alternative medications for pregnant women who have symptoms of high blood pressure.

Did you know?

The cure for trichomoniasis is easy as long as the patient does not drink alcoholic beverages for 24 hours. Just a single dose of medication is needed to rid the body of the disease. However, without proper precautions, an individual may contract the disease repeatedly. In fact, most people develop trichomoniasis again within three months of their last treatment.

Did you know?

The U.S. Pharmacopeia Medication Errors Reporting Program states that approximately 50% of all medication errors involve insulin.

Did you know?

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

Average winter rainfall and variation in rainfall among sites inhabited by Suromalus ater Average winter rainfall and variation in rainfall among sites inhabited by Suromalus ater
Pupil assessment; B, moving penlight directly in front of pupil. Pupil assessment; B, moving penlight directly in front of pupil.
Although average brain size increases gradually though time in H. erectus, individuals with small br Although average brain size increases gradually though time in H. erectus, individuals with small br
Gradient Flow:Upper air moving from areas of higher pressure to areas of lower pressure undergo ... Gradient Flow:Upper air moving from areas of higher pressure to areas of lower pressure undergo ...
Is It Safe To Get Your Meals from a Food Truck? Is It Safe To Get Your Meals from a Food Truck?
finding the resultant force finding the resultant force
Video: Membrane Protein and Facilitated Transport (Passive Vs Active)

For a complete list of videos, visit our video library