1. Lesson 18 Newton’s second Law

2. 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

3. Review of Newton’s First Law
How much do you know about bobsledding?
Bobsled Video
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

5. 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.

6. Relationship between force, mass, and acceleration F=MxA
Newton’s second law
Relationship between force, mass, and acceleration
F=MxA
v=iwP4heWDhvw

7. 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 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

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