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Claim these words!
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agree () ? disagree () ?

• 1. If you drop two empty plastic bottles, they
  will fall at the same speed.

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• 2 If you fill one bottle with water, it will
  fall faster than the empty one.

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• 3 The bottle of water has a greater force on it
  than the empty bottle has.

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• 4 The heavier the car, the more force is needed
  to make it speed up.

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• 5 A force is always needed to keep an object
  moving.

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• 6 A force is always needed to slow down an
  object.

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• 7 It takes more force to slow down a small car
  than a large truck because the truck is heavier.

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• 8 When a falling object hits the ground, the
  ground applies an upward force on the object.

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• 9 Friction exists only when two solid objects
  rub against each other.

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• 10 The way any object moves can be explained by
  Newtons three laws of motion.
• Hold on! There are two bonus problems coming!

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Balanced forces ?
Unbalanced forces?No net force !
Net force!
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Balanced forces ?
Unbalanced forces?No net force !
Net force!
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