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Study Guide Answers

Study Guide Answers. Popham 6 Science Ms. Browne. 1. What is a force?. A force is a push or pull There are two main types of forces balanced and unbalanced. 2. Unit to measure forces? Instrument?. The unit to measure forces is a Newton (N ). 3. The affect of balanced forces?.

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Study Guide Answers

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  1. Study Guide Answers Popham 6 Science Ms. Browne

  2. 1. What is a force? • A force is a push or pull • There are two main types of forces balanced and unbalanced

  3. 2. Unit to measure forces? Instrument? • The unit to measure forces is a Newton (N)

  4. 3. The affect of balanced forces? • Balanced forces are equal in size and opposite in direction. • Balanced forces DO NOT cause motion. The object will be at rest.

  5. 4. What kinds of force cause motion? • Unbalanced forces cause motion to occur.

  6. 5. How do unbalanced force cause a change in motion? • Unbalanced forces can cause: • An object at rest to move • An object in motion to speed up • An object in motion to slow down • An object to change direction • An object to stop its motion

  7. 6. How are NET forces calculated? Diagramed? • Net force is calculated by adding together forces acting in the same direction and subtracting forces acting in opposite directions. • Forces are diagrammed using arrows. 15 N 15 N

  8. 7. What is gravity? • Gravity is the force of attraction between all objects in the universe • On Earth, gravity pulls objects towards Earth’s dense core

  9. 8. Newton’s Law of Universal Gravitation? • The law of universal gravitation states that every object in the universe is affected by gravity.

  10. 9. The two characteristics that affect gravity? • Mass and distance affect gravity • Objects with larger mass have more matter for gravity to pull on • Objects farther apart have less attraction between them

  11. 10. Weight and gravity? Weight and Mass? • Weight is a measure of the pull of gravity on an object. • Mass is the amount of matter in an object whereas weight is a measure of the pull of gravity.

  12. 11. Air resistance? • Air resistance is the force of air push against an object falling through Earth’s atmosphere. Air resistance is not the same for all objects. Objects with a larger surface have more air resistance.

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