I've been waiting all day so can someone please check my answers.
Key:
*** means my answer
1. If the net force on an object is 0 N, the forces are considered unbalanced. (1 Point)
True
False***
2. Most people in the United States use feet and miles to measure distance in their everyday lives. Why do scientists in the United States use meters to measure distance? (1 Point)
A) Meters allow scientists to be more accurate in their measurements.***
B) Science requires special measurements that are not used in everyday life.
C) All scientists use meters to measure distance to help eliminate confusion.
D) Meters are better than feet for measuring objects in motion.
3. Which of the following forces causes a feather to fall slower than a bowling ball?
A) Gravity
B) Rolling Friction
C) Sliding Friction
D) Air Resistance***
4. A small fish in the Pacific Ocean watches a shark swim by a large rock a few meters away. Which of the following is the reference point in this scenario?
A) Shark
B) Large rock***
C) Water
D) Pacific Ocean
5. Which of the following pairs of objects would have the strongest gravitational pull?
A) two tall buildings in the same city
B) two tall buildings in different cities
C) two stars very far away from each other
D) two stars very close to each other***
6. A maglev train uses powerful magnets to lift the train above the tracks as it moves forward. Such a design reduces which of the following forces?
A) Rolling friction***
B) Gravity
C) Air resistance
D) Fluid friction
7. Which of the following examples does NOT demonstrate a change in velocity?
A) An elevator slows down in order to stop at the top floor
B) A cruise ship travels west at a constant speed***
C) A soccer ball is passed across the field or
D) A train remains at a constant speed as it moves around the bend
8. Which of the following does NOT need to be measured in order to describe motion?
A) size of an object ***
B) distance the object traveled
C) velocity of the object
D) acceleration of the object
check #2
the rest look good
Thank you. :) ☺
Dod you get it beyblade
Yeah I got it thank you. :)
Here is a review of your answers:
1. If the net force on an object is 0 N, the forces are considered unbalanced.
Your Answer: False
Correct Answer: False
Explanation: If the net force on an object is 0 N, the forces are considered balanced, not unbalanced.
2. Most people in the United States use feet and miles to measure distance in their everyday lives. Why do scientists in the United States use meters to measure distance?
Your Answer: Meters allow scientists to be more accurate in their measurements.
Explanation: Correct! Scientists use meters to measure distance because it allows for more precise and standardized measurements in scientific experiments and calculations.
3. Which of the following forces causes a feather to fall slower than a bowling ball?
Your Answer: Air Resistance
Explanation: Correct! Air resistance causes objects, like a feather, to fall slower compared to objects with less surface area, like a bowling ball.
4. A small fish in the Pacific Ocean watches a shark swim by a large rock a few meters away. Which of the following is the reference point in this scenario?
Your Answer: Large rock
Explanation: Correct! The reference point in this scenario is the large rock, which helps determine the relative position and movement of the shark with respect to the rock.
5. Which of the following pairs of objects would have the strongest gravitational pull?
Your Answer: Two stars very close to each other
Explanation: Correct! Two stars very close to each other would have the strongest gravitational pull due to their large masses and close proximity.
6. A maglev train uses powerful magnets to lift the train above the tracks as it moves forward. Such a design reduces which of the following forces?
Your Answer: Rolling friction
Explanation: Correct! The design of a maglev train reduces the force of rolling friction by levitating the train above the tracks using magnets.
7. Which of the following examples does NOT demonstrate a change in velocity?
Your Answer: A cruise ship travels west at a constant speed
Explanation: Correct! A cruise ship traveling west at a constant speed does not demonstrate a change in velocity, as velocity is a vector quantity that includes both speed and direction.
8. Which of the following does NOT need to be measured in order to describe motion?
Your Answer: Size of an object
Explanation: Correct! The size of an object is not necessary to describe motion. Instead, motion can be described by measuring distance, velocity, and acceleration.