Warm-Up Find your Vehicle. You have 5 minutes to put any finishing touches on your vehicle. After 5 minutes, it MUST be on the counter ready for display, or you are disqualified.

Vehicle Testing As you watch each groups, think about the following questions: What design features do you see that are unique to the vehicle? What features of the design do you think negatively impact the vehicle’s ability to travel 3m? What features of the design do you think make it easier for the vehicle to travel 3m?

Questions to Consider: What challenges did you and your group experience? How did you overcome them? Is your final model similar to your initial sketch? How did your design change? Why did your group decide to change the design? List 3 things you learned during this “project”. In other words: what do you think was valuable about this project. Start to think in terms of physics terms.

Partner Up Share your three concepts that you learned during this experience. As partners, pick your top two concepts learned.

Partner Up – Take 2 Form a group of 4 (in other words, find another set of partners to join you). Share your top two concepts learned. As a group of 4, choose your favorite one to share with the class. One person from you group is to write this important concept on the board.

Newton’s Laws

Newton’s First Law “An object continues its state of rest, or uniform motion in a straight line, unless acted upon by some external force.” Identify key words – underline them. What is this law really saying?

Vocab Word Inertia Definition: Resistance to change. Make me think of: Features: Product of mass More mass = more inertia Objects essentially want to keep doing what they’re doing. Image:

Newton’s First Law: Summary Essentially: objects keep doing what they’re doing. VOCAB WORD: Inertia: resistance to change Inertia is a product of mass More mass = more resistance

Vehicle Challenge Did any groups encounter Newton’s First Law during the design challenge?

Newton’s First Law: Sports How is Newton’s First Law applied during these clips? http://www.youtube.com/watch?v=1hZf7hcrtvQ

Newton’s Second Law “When a force acts upon a mass, the result is acceleration of that mass in the direction of the force applied.” Identify key words – underline them. What is this law really saying?

Newton’s Second Law Essentially says: F=ma Objects accelerate in the direction of applied force. Goes back to vectors: magnitude and direction. Mass: magnitude Acceleration: magnitude & direction Direction comes from acceleration http://www.youtube.com/watch?v=uI-QvUBy0WA

Vehicle Challenge How does this law apply to our balloon vehicle challenge? More mass = need more F to accelerate object Did any groups discover that their car had too much mass for the force provided by the balloon?