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Define Newton’s three laws. Please post your definition of each law. (This is worth 5 points)
1. Newton’s first law of motion: An object at rest will stay at rest, and an object in motion will stay in motion unless a force acts on it.
2. Newton’s second law of motion: Force equals mass times acceleration. The greater the force the greater the acceleration. The greater the mass, the greater the force needed to move the object.
3. Newton’s third law of motion: For every action there is an equal and opposite reaction. Forces are always found in pairs. If the forces are equal in opposite directions, the object will not move. The forces cancel each other out so that the acceleration is zero.
COMPLETE ALL Lab Activities below:
# 1
1. Place a note card on the table so about 1/3 of the card extends over the edge of the table.
2. Place a washer on the card that is on the table.
3. As quickly as you can, pull the card from under the washer.
4. Observe the motion of the washer.
What did you observe?
Which of Newton’s Laws is being demonstrated by this activity? Explain your rationale?
# 2
1. Hold your right hand next to your right ear with palm up.
2. Place a penny on your elbow.
3. Quickly straighten your arm and catch the penny.
What did you observe?
Which of Newton’s Laws is being demonstrated by this activity? Explain your rationale?
