day 4\nwrite \b\ for balanced or \u\ for unbalanced for the following questions.\n1. ____ a person jogging…

day 4\nwrite \b\ for balanced or \u\ for unbalanced for the following questions.\n1. ____ a person jogging at a constant speed. 6. ____ a bowling ball knocking over pins.\n2. ____ a car accelerating at a green light. 7. ____ a book sitting on a shelf.\n3. ____ pushing a lawnmower across the yard. 8. ____ a linebacker tackling a running back.\n4. ____ a cookie sitting on a plate. 9. ____ a person sitting on a chair.\n5. ____ slowing down to stop at a red light. 10. ____ a plane flying at a constant speed.

day 4\nwrite \b\ for balanced or \u\ for unbalanced for the following questions.\n1. ____ a person jogging at a constant speed. 6. ____ a bowling ball knocking over pins.\n2. ____ a car accelerating at a green light. 7. ____ a book sitting on a shelf.\n3. ____ pushing a lawnmower across the yard. 8. ____ a linebacker tackling a running back.\n4. ____ a cookie sitting on a plate. 9. ____ a person sitting on a chair.\n5. ____ slowing down to stop at a red light. 10. ____ a plane flying at a constant speed.

Answer

Brief Explanations:

  1. A person jogging at a constant speed has no net - force change, so it's balanced (B).
  2. A car accelerating has a non - zero net force, so it's unbalanced (U).
  3. Pushing a lawnmower usually involves a non - zero net force to move it, so it's unbalanced (U).
  4. A cookie sitting on a plate is at rest with no net force acting on it, so it's balanced (B).
  5. Slowing down involves a change in velocity and a non - zero net force, so it's unbalanced (U).
  6. A bowling ball knocking over pins involves a force interaction and a change in motion of the pins, so it's unbalanced (U).
  7. A book sitting on a shelf is at rest with balanced forces (gravity and normal force), so it's balanced (B).
  8. A linebacker tackling a running back involves a force interaction and a change in motion, so it's unbalanced (U).
  9. A person sitting on a chair is at rest with balanced forces (gravity and normal force), so it's balanced (B).
  10. A plane flying at a constant speed has no net force change in the direction of motion (assuming no vertical or other non - motion related force changes), so it's balanced (B).

Answer:

  1. B
  2. U
  3. U
  4. B
  5. U
  6. U
  7. B
  8. U
  9. B
  10. B