1. Newton’s Laws of Motion Concept Map

2. Use Math to Describe Motion

3. Explain why objects move the way they do

4. Use Math to Describe Motion Explain why objects move the way they do EXAMPLE: Quarterbacks use the laws of motion when they throw a football

5. Use Math to Describe Motion Explain why objects move the way they do EXAMPLE: Quarterbacks use the laws of motion when they throw a football Predict where an object will go next

6. Use Math to Describe Motion Explain why objects move the way they do EXAMPLE: Quarterbacks use the laws of motion when they throw a football Predict where an object will go next EXAMPLE: NASA uses the laws of motion to predict the path the asteroids in our solar system will take

7. Use Math to Describe Motion Explain why objects move the way they do EXAMPLE: Quarterbacks use the laws of motion when they throw a football Predict where an object will go next EXAMPLE: NASA uses the laws of motion to predict the path the asteroids in our solar system will take Determine how an object’s motion can be changed

8. Use Math to Describe Motion Explain why objects move the way they do EXAMPLE: Quarterbacks use the laws of motion when they throw a football Predict where an object will go next EXAMPLE: NASA uses the laws of motion to predict the path the asteroids in our solar system will take Determine how an object’s motion can be changed EXAMPLE: Engineers use the laws of motion when designing the safety equipment in our cars

9. Use Math to Describe Motion Explain why objects move the way they do EXAMPLE: Quarterbacks use the laws of motion when they throw a football Predict where an object will go next EXAMPLE: NASA uses the laws of motion to predict the path the asteroids in our solar system will take Determine how an object’s motion can be changed EXAMPLE: Engineers use the laws of motion when designing the safety equipment in our cars Determine where objects started from and the path they took to reach their final location

10. Use Math to Describe Motion Explain why objects move the way they do EXAMPLE: Quarterbacks use the laws of motion when they throw a football Predict where an object will go next EXAMPLE: NASA uses the laws of motion to predict the path the asteroids in our solar system will take Determine how an object’s motion can be changed EXAMPLE: Engineers use the laws of motion when designing the safety equipment in our cars Determine where objects started from and the path they took to reach their final location EXAMPLE: Forensic scientists use the laws of motion to trace the pathways of bullets while solving murders

11. Wrap-Up #1 ► Describe one real-life situation in which a person might use the laws of motion. Do not use any of the examples given already!

12. Newton’s Laws of Motion

13. 1 st Law An object at rest will remain at rest and an object in motion will remain in motion at a constant velocity unless acted upon by unbalanced forces

14. Newton’s Laws of Motion 1 st Law Inertia: resistance to change in motion

15. Newton’s Laws of Motion 1 st Law Inertia: resistance to change in motion AKA: momentum p = m * v

16. Newton’s Laws of Motion 1 st Law Inertia: resistance to change in motion AKA: momentum p = m * v Forces Forces are balanced when they cancel each other out

17. Newton’s Laws of Motion 1 st Law Inertia: resistance to change in motion AKA: momentum p = m * v Forces Forces are balanced when they cancel each other out Forces are unbalanced when they do not cancel each other out

18. Wrap-Up #2 ► For each of the following situations, determine if the forces are balanced or unbalanced:  A snow skier is speeding down a mountain, going faster and faster  A snow skier is being carried up the mountain by the lift. The lift moves at a constant speed.

19. Wrap-Up #2: Answers ► For each of the following situations, determine if the forces are balanced or unbalanced:  A snow skier is speeding down a mountain, going faster and faster ► Unbalanced – the skier is speeding up; acceleration requires unbalanced forces  A snow skier is being carried up the mountain by the lift. The lift moves at a constant speed. ► Balanced – constant speed means no acceleration

20. Newton’s Laws of Motion 1 st Law Inertia: resistance to change in motion AKA: momentum p = m * v Forces Forces are balanced when they cancel each other out Forces are unbalanced when they do not cancel each other out Common forces are present all around us Normal force Gravity Friction

21. Newton’s Laws of Motion 2 nd Law Force is equal to the product of mass and acceleration 1 st Law Inertia: resistance to change in motion AKA: momentum p = m * v Forces Forces are balanced when they cancel each other out Forces are unbalanced when they do not cancel each other out Common forces are present all around us Normal force Gravity Friction

22. Newton’s Laws of Motion 2 nd Law Bigger forces cause more acceleration 1 st Law Inertia: resistance to change in motion AKA: momentum p = m * v Forces Forces are balanced when they cancel each other out Forces are unbalanced when they do not cancel each other out Common forces are present all around us Normal force Gravity Friction

23. Newton’s Laws of Motion 2 nd Law Bigger forces cause more acceleration Baseball- bunt it and it has low acceleration; really whack it and it has high acceleration 1 st Law Inertia: resistance to change in motion AKA: momentum p = m * v Forces Forces are balanced when they cancel each other out Forces are unbalanced when they do not cancel each other out Common forces are present all around us Normal force Gravity Friction

24. Newton’s Laws of Motion 2 nd Law Bigger forces cause more acceleration Race car – barely push the pedal and it has low acceleration; stomp down and it has high acceleration Baseball- bunt it and it has low acceleration; really whack it and it has high acceleration 1 st Law Inertia: resistance to change in motion AKA: momentum p = m * v Forces Forces are balanced when they cancel each other out Forces are unbalanced when they do not cancel each other out Common forces are present all around us Gravity Friction Normal force

25. Newton’s Laws of Motion 2 nd Law Bigger forces cause more acceleration Race car – barely push the pedal and it has low acceleration; stomp down and it has high acceleration Baseball- bunt it and it has low acceleration; really whack it and it has high acceleration 1 st Law Inertia: resistance to change in motion AKA: momentum p = m * v Forces Forces are balanced when they cancel each other out Forces are unbalanced when they do not cancel each other out Common forces are present all around us Gravity Friction Normal force Different masses have different accelerations

26. Newton’s Laws of Motion 2 nd Law Bigger forces cause more acceleration Race car – barely push the pedal and it has low acceleration; stomp down and it has high acceleration Baseball- bunt it and it has low acceleration; really whack it and it has high acceleration 1 st Law Inertia: resistance to change in motion AKA: momentum p = m * v Forces Forces are balanced when they cancel each other out Forces are unbalanced when they do not cancel each other out Common forces are present all around us Gravity Friction Normal force Different masses have different accelerations When a bug hits a windshield it goes splat. The windshield doesn’t have much acceleration from the impact with the bug.

27. Newton’s Laws of Motion 2 nd Law Bigger forces cause more acceleration Race car – barely push the pedal and it has low acceleration; stomp down and it has high acceleration Baseball- bunt it and it has low acceleration; really whack it and it has high acceleration 1 st Law Inertia: resistance to change in motion AKA: momentum p = m * v Forces Forces are balanced when they cancel each other out Forces are unbalanced when they do not cancel each other out Common forces are present all around us Gravity Friction Normal force Different masses have different accelerations When a bug hits a windshield it goes splat. The windshield doesn’t have much acceleration from the impact with the bug. 3 rd Law For every action there is an equal and opposite reaction

28. Newton’s Laws of Motion 2 nd Law Bigger forces cause more acceleration Race car – barely push the pedal and it has low acceleration; stomp down and it has high acceleration Baseball- bunt it and it has low acceleration; really whack it and it has high acceleration 1 st Law Inertia: resistance to change in motion AKA: momentum p = m * v Forces Forces are balanced when they cancel each other out Forces are unbalanced when they do not cancel each other out Common forces are present all around us Gravity Friction Normal force Different masses have different accelerations When a bug hits a windshield it goes splat. The windshield doesn’t have much acceleration from the impact with the bug. 3 rd Law Force has direction, so opposite means it goes the other direction

29. Newton’s Laws of Motion 2 nd Law Bigger forces cause more acceleration Race car – barely push the pedal and it has low acceleration; stomp down and it has high acceleration Baseball- bunt it and it has low acceleration; really whack it and it has high acceleration 1 st Law Inertia: resistance to change in motion AKA: momentum p = m * v Forces Forces are balanced when they cancel each other out Forces are unbalanced when they do not cancel each other out Common forces are present all around us Gravity Friction Normal force Different masses have different accelerations When a bug hits a windshield it goes splat. The windshield doesn’t have much acceleration from the impact with the bug. 3 rd Law Force has direction, so opposite means it goes the other direction The action and reaction forces are applied to different objects

30. Newton’s Laws of Motion 2 nd Law Bigger forces cause more acceleration Race car – barely push the pedal and it has low acceleration; stomp down and it has high acceleration Baseball- bunt it and it has low acceleration; really whack it and it has high acceleration 1 st Law Inertia: resistance to change in motion AKA: momentum p = m * v Forces Forces are balanced when they cancel each other out Forces are unbalanced when they do not cancel each other out Common forces are present all around us Gravity Friction Normal force Different masses have different accelerations When a bug hits a windshield it goes splat. The windshield doesn’t have much acceleration from the impact with the bug. 3 rd Law Force has direction, so opposite means it goes the other direction The action and reaction forces are applied to different objects Gravity A: Earth pulls you down R: you pull Earth up

31. Newton’s Laws of Motion 2 nd Law Bigger forces cause more acceleration Race car – barely push the pedal and it has low acceleration; stomp down and it has high acceleration Baseball- bunt it and it has low acceleration; really whack it and it has high acceleration 1 st Law Inertia: resistance to change in motion AKA: momentum p = m * v Forces Forces are balanced when they cancel each other out Forces are unbalanced when they do not cancel each other out Common forces are present all around us Gravity Friction Normal force Different masses have different accelerations When a bug hits a windshield it goes splat. The windshield doesn’t have much acceleration from the impact with the bug. 3 rd Law Force has direction, so opposite means it goes the other direction The action and reaction forces are applied to different objects Gravity A: Earth pulls you down R: you pull Earth up Space Ship A: ship pushes gas down R: gas pushes ship up

32. Wrap-Up #3 ► Dave and Bob are pushing against each other. If the action force is Dave pushing Bob to the left, what is the reaction force?

33. Wrap-Up #3: Answer ► Dave and Bob are pushing against each other. If the action force is Dave pushing Bob to the left, what is the reaction force?  Bob pushing Dave to the right