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A line coming off of a spot of a spinning CD that shows the spot's direction of travel is a _____.

revolution time

perpendicular line

rotation time

tangent line
2.
Choose the best answer.

If you need to find the centripetal force acting on an object, you would use this formula _____.

3.
Choose the best answer.

(Double points) A piece of gum becomes stuck upon a skateboard's wheel. What is the centripetal acceleration of the piece of gum if the wheel's radius is 30 mm and the tangential velocity is 0.5 m/s?

4.
Choose the best answer.

To determine the centripetal acceleration, you would use _____.

5.
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During its flight, a javelin follows a _____ curve.

SW

NW

linear

parabolic
6.
Choose the best answer.

A spinning CD rotates around its axis, the force that makes the CD spin is _____.

stability

torque

centrifuge

tangent
7.
Choose the best answer.

A female javelin thrower at an athletic competition hurls a 600 g javelin down a field. She has given _____ to the javelin.

propulsion

parabolic

linear inertia

projectile
8.
Choose the best answer.

Carlos hit a post using a sling consisting of two straps tied together and holding a stone in the middle. He spun the stone rapidly several times, then let go of one of the straps allowing the stone to fly toward the post. The stone flew off in a straight line because of _____.

rotational inertia

tangential inertia

center seeking inertia

centripetal inertia
9.
Choose the best answer.

To compute the distance a projectile travels if you know the hypotenuse's length, you use this formula _____.

10.
Choose the best answer.

The reason for a vertical vector's spacing is acceleration due to _____.

collision

inertia

mass

gravity
11.
Choose the best answer.

A bee is making circular motions about a foot around his hive before he finally lands.The bees is showing what _____ looks like.

revolution

vector

distance

rotation
12.
Choose the best answer.

If you need to find the gravitational force between two objects, you would use this formula _____.

13.
Choose the best answer.

A bowling ball meanders from side to side as it rolls down the alley; the bowling ball is in _____ motion.

linear

parabolic

projectile

nonlinear
14.
Choose the best answer.

You have an object's velocity and the time it is moving, to find the total distance you use _____.

15.
Choose the best answer.

To determine the rotational inertia of an object, you would use _____.

16.
Select two that apply.

During the trajectory of a javelin, the curve it makes has both _____ and _____ vectors.

linear

NW

vertical

SW

horizontal
17.
Choose the best answer.

The intervals in a horizontal vector are _____.

clumped together

evenly spaced

scattered

uneven
18.
Choose the best answer.

To calculate the circumference of a circle describing a point revolving around a center, you use _____.

19.
Choose the best answer.

Sometimes a bee does a little dance around himself, this shows _____.

vector

rotation

revolution

distance

1 answer

Here are the best answers for each question:

  1. A line coming off of a spot of a spinning CD that shows the spot's direction of travel is a tangent line.

  2. If you need to find the centripetal force acting on an object, you would use this formula Fc = mv²/r (not explicitly listed, but should be understood as the standard formula for centripetal force).

  3. A piece of gum becomes stuck upon a skateboard's wheel. What is the centripetal acceleration of the piece of gum if the wheel's radius is 30 mm and the tangential velocity is 0.5 m/s?
    To calculate it, use the formula a_c = v²/r. Substituting the given values:
    Convert radius to meters: 30 mm = 0.03 m.
    a_c = (0.5 m/s)² / 0.03 m = 8.33 m/s² (approximately).
    (Choose the appropriate answer if multiple options are provided).

  4. To determine the centripetal acceleration, you would use a_c = v²/r.

  5. During its flight, a javelin follows a parabolic curve.

  6. A spinning CD rotates around its axis, the force that makes the CD spin is torque.

  7. A female javelin thrower at an athletic competition hurls a 600 g javelin down a field. She has given propulsion to the javelin.

  8. Carlos hit a post using a sling consisting of two straps tied together and holding a stone in the middle. He spun the stone rapidly several times, then let go of one of the straps allowing the stone to fly toward the post. The stone flew off in a straight line because of rotational inertia.

  9. To compute the distance a projectile travels if you know the hypotenuse's length, you use this formula d = hypotenuse * sin(θ) (the specific formula may vary based on context).

  10. The reason for a vertical vector's spacing is acceleration due to gravity.

  11. A bee is making circular motions about a foot around his hive before he finally lands. The bee is showing what rotation looks like.

  12. If you need to find the gravitational force between two objects, you would use this formula Fg = G(m1*m2/r²) (not explicitly listed, but the standard formula for gravitational force).

  13. A bowling ball meanders from side to side as it rolls down the alley; the bowling ball is in nonlinear motion.

  14. You have an object's velocity and the time it is moving, to find the total distance you use distance = velocity * time.

  15. To determine the rotational inertia of an object, you would use I = ∑mr² (not explicitly listed, but would be the standard expression for rotational inertia).

  16. During the trajectory of a javelin, the curve it makes has both vertical and horizontal vectors.

  17. The intervals in a horizontal vector are evenly spaced.

  18. To calculate the circumference of a circle describing a point revolving around a center, you use C = 2πr.

  19. Sometimes a bee does a little dance around himself, this shows rotation.

Make sure to cross-reference specific formulas and numbers if they are relevant to your learning material!