Science help! URGENT. Check answers

1. True or False: If the net force of an object is 0 N, the forces are considered unbalanced. (True)

2. Which of the following forces causes a feather to fall slower than a blowing ball?
gravity ←
rolling friction
sliding friction
air resistance

3. A small fish in the pacific ocean watches a shark swim by a large rock a few meters away. Which of the following reference point in this scenario?
shark
large rock ←
water
Pacific Ocean

4. Which of the following pairs of objects would have the strongest gravitational pull?
two buildings in the same city ←
two tall buildings in different cities
two stars very far away from each other
two stars very close to each other

5. A maglev train uses powerful magnets to lift the train above the tracks as it moves forward. Such as a design reduces which of the following forces?
rolling friction
gravity
air resistance ←
fluid friction

6. Which of the following examples does not demonstrate a change in velocity?
An elevator slows down in order to stop at the top floor ←
A cruise ship travels west at a constant speed
A soccer ball is passed across the field or ←
A train remains at a constant speed as it moves around the bend


7. Which of the following does not need to be measured in order to describe motion?
size of an object
distance the object traveled
velocity of the object ←
acceleration of the object


Thanks so much!

  1. 👍 0
  2. 👎 0
  3. 👁 766
asked by Elena
  1. 1. Nope. If the net forces are zero, it means that the object is at an equilibrium state (may be static of dynamic), and thus implies the forces cancel or balance each other out.

    2. It's actually air resistance. I suggest you read about Aristotle's and Galileo's experiment about the topic (gravity).

    3. Ain't sure with this one. ^^;

    4. Recall that gravitational force can be measure using the formula:
    F = G*m1*m2 / r^2
    where m1 and m2 are the masses of the objects, and r is the distance between them.
    Thus, F is largest when the objects are very massive, and they are close with each other. And therefore, it's "two stars very close to each other".

    5. I think it's the rolling friction, because there would be less contact between the tracks and the wheels of the train.

    6. It's "a cruise ship travels west at a constant speed". Note in order to have a constant velocity, you must have both magnitude and direction as constant.

    7. It's the size of the object. Note that distance, velocity and acceleration are the essential concepts of kinematics.



    Hope this helps~ :3

    1. 👍 0
    2. 👎 0
    posted by Jai
  2. Um. you should stop saying "I think" because your not sure and what if "Elena" doesn't get the grade on her science quiz that she wants.

    1. 👍 0
    2. 👎 0
    posted by Vanessa16
  3. If anybody is still looking for the answers to this quiz, I got a 100 with these answers:
    1. False
    2. C
    3. D
    4. B
    5. D
    6. A
    7. B
    8. A
    On number 9, give an example in change of velocity. The change of velocity is known as acceleration, and it is the rate at which velocity changes. The change can be speed, direction, or both. So if you were driving at 50 mph and sped up to 55, you would be accelerating 5 miles per hour. Get it?

    1. 👍 4
    2. 👎 0
    posted by Anon
  4. 1. False
    2. C
    3. D
    That is all I know! sorry! hope these are useful!

    1. 👍 0
    2. 👎 0
    posted by Maddie
  5. Anon is 100% correct

    1. 👍 0
    2. 👎 0
    posted by anonymoose
  6. THANK YOU SO MUCH ANON

    1. 👍 0
    2. 👎 0
    posted by Bloopy
  7. Anon is 100% right!

    1. 👍 0
    2. 👎 0
    posted by That Girl
  8. I got 100% but I only used this site for clarification Haha

    1. 👍 0
    2. 👎 0
    posted by (:
  9. Anon got 6 wrong, its supposed to be A. Rolling Friction

    1. 👍 0
    2. 👎 0
    posted by Anonymus
  10. Yay Thanks! 100%

    1. 👍 0
    2. 👎 0
    posted by Me
  11. THANKS YALL OML

    1. 👍 0
    2. 👎 0
    posted by papa trump
  12. anon is 100% correct

    1. 👍 0
    2. 👎 0
    posted by Anonymous
  13. You guys are so kewl. Y'all are my fam, fam

    1. 👍 0
    2. 👎 0
    posted by Helping you
  14. If you go to Connexus for the writeing question that Anon answered change stuff around and use different words because now they are finding out if your cheating and I got caught once and I got in trouble so switch words around and use different words, so you don't get caught I'm helping you out

    1. 👍 0
    2. 👎 0
    posted by Helping You Out
  15. OR, don't use this site to cheat on your quizzes and tests, because yes we know about it. If you can find the answers, we can find the answers.

    1. 👍 0
    2. 👎 1
    posted by CA Teacher
  16. So, the essay response from Anon is for an old essay question that we had changed over a year ago. We actively search for these answers online and issue HCVs to students who use them. We also have the curriculum changed in response to what you post. If you use this answer, it tells me that you didn't even bother to READ the new question and you are just copying non-sense. You are playing Russian Roulette with your grade if you copy from the internet. Do you want to guess whether or not your teachers have found the answers posted and had the questions changed? Ask some of my students who got 0 points on assignments last year how much fun it is to have your grade plummet overnight.

    1. 👍 0
    2. 👎 0
    posted by Mrs. A

Respond to this Question

First Name

Your Response

Similar Questions

  1. Physics-please check my work

    Can you check my work please? true/false 1.) force is a scalar quantity: *FALSE 2.) the object on which a force acts is called the system: *TRUE 3.)The specific, indentifiable cause of a force is called the system: *FALSE 4.) A

    asked by Gavin on December 11, 2012
  2. Science

    i posted this earlier, but no one answered. so i'll try again. Can you check my work please? true/false 1.) force is a scalar quantity: *FALSE 2.) the object on which a force acts is called the system: *TRUE 3.)The specific,

    asked by Gavin on December 11, 2012
  3. physics

    true or false If a net force acts on an object, the object's speed will change. An object's velocity will change if a net force acts on the object. If two object have the same acceleration, they are under the influence of equal

    asked by molly on October 4, 2010
  4. Physics

    Hi, I had some questions about Physics and Newton’s Three Laws of Motion and was wondering if someone could possibly help me. I wasn't sure if my answers were correct and I need to make sure they are. #1 Write out in words what

    asked by Hannah on November 7, 2009
  5. Physics

    Hi, I had some questions about Physics and Newton’s Three Laws of Motion and was wondering if someone could possibly help me. Some of the questions I wasn’t sure about the answers. #1 Write out in words what “acceleration ~

    asked by Hannah on November 7, 2009
  6. Science

    Hi! I just want to make sure my answers are correct. (Key: * means that is my answer.) A basketball momentarily changes shape as it bounces off the floor. This is due to balanced forces on the ball. True False* A ball slowing down

    asked by Samantha on April 19, 2017
  7. science

    1.)a basketball momentarily changes shapes as it bounces off the floor. this is due to balanced forces acting on the ball. True (answer) false 2.) a ball slowing down as it roles across the carpet is an example of what ? (1 point)

    asked by Hannah Marie on October 8, 2014
  8. The Effects of Force

    Question #1: A basketball momentarily changes shape as it bounces off the floor. This is due to balanced forces acting on the ball. a. true b. false According to what I have studied when balanced forces are on an object, that

    asked by Gourami on February 10, 2016
  9. science

    Numbers 1-9 are true and false questions.Check if my answers are right and if I didn't write anything on the blank, I need help with them. Thanks!!!! _____ 1. Velocity could be reported as 50 k/hr. True 2. How far an object

    asked by Gabby ( 5 grade) on February 27, 2012
  10. physics- MC QUESTIONS

    Q 1: which of the following conditions occur when an object is in static equilibrium ? (can be more than one option) a. net force on the object is zero b. net torque on the object is zero c. acceleration of the object is zero d.

    asked by Lilly on May 9, 2012
  11. physics

    A)An object at rest has no forces acting on it. B)An object can be moving in one direction while the net force acting on it is in another direction. C)In order to move a massive crate sitting on the floor, the force you apply to

    asked by Sarah on February 14, 2014

More Similar Questions