Lesson 18 Newton’s second Law

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Presentation transcript:

Lesson 18 Newton’s second Law

Review What is Newton’s first law of motion? An object at rest will stay at rest An object with a constant velocity will stay at that velocity UNLESS acted on by an unequal force

Review of Newton’s First Law How much do you know about bobsledding? Bobsled Video https://www.youtube.com/watch?v=hITRkroHGgI INDIVIDUALLY brainstorm HOW and WHY the crash happened Draw a diagram and write an explanation of your idea We will discuss as a class in 10 minutes

Newton’s second law What does this mean? Acceleration is produced when a force acts on a mass. The greater the mass the greater the amount of force needed. What does this mean? Heavier objects require more force to move the same distance as lighter objects.

Relationship between force, mass, and acceleration F=MxA Newton’s second law Relationship between force, mass, and acceleration F=MxA https://www.youtube.com/watch? v=iwP4heWDhvw

Newton’s second law Mike's car, which weighs 1,000 kg, is out of gas. Mike is trying to push the car to a gas station, and he makes the car go 0.05 m/s2. Using Newton's Second Law, you can compute how much force Mike is applying to the car. Mass = 1000 kg Acceleration = 0.05 m/s2 F=MxA 1000 kg x 0.05 m/s2 F=50 newtons

Students Should be Able to: What is Newton’s second Law? What is the equation to calculate Force?