1. Newton’s 2nd Law of Motion
F = m ∙ a

2. The acceleration of an object depends on: 1. mass of the object
2.size of the force applied to it

3. Force = mass x acceleration
F = ma
Triangle formula is:

4. A Newton
The unit of force is the Newton
Abbreviated N
Equals kg ∙ m/s2

5. Example 1: How much force is needed to accelerate a ball that is
Example 1: How much force is needed to accelerate a ball that is .5kg to 15 m/s2 ?

6. F=ma
F =.5 kg x 15 m/s2
F = 7.5 Newtons (N)

7. Example 2:
What is the mass of an object that has a force of 25 N applied to it and it accelerates to 400 m/s2 ?

8. Example:
If a team pulls with a combined force of 9000N on an airplane with a mass of 30,000 kg. What is the acceleration of the airplane?
a = F/m

9. a = 9000N
30,000 kg
a = 9000 kg ∙ m/s2
a = 0.3 m/s2

10. Example 4
What is the force on a 1,000 kilogram-elevator that is falling freely under the acceleration of gravity only?

11. Example 5:
The circus is looking for a new human cannonball. The cannon needs to be able to accelerate the person 10 m/s² to overcome gravity, and the cannon only generates 750 N of force. What
is the largest mass a person could have and still be shot out of the cannon?.

12. Example 6:
A super secret spy guy has a jetpack that helps him to fly. Super secret spy guy has a mass of 85 kg. How much force will it take for him to overcome gravity and fly?

13. Example 7: How much force does it take to make a rocket accelerate 12 m/s² if the rocket has a mass of 50,000 kg?

14. Example 8: Arnie Gosofast puts a new engine in his car
Example 8: Arnie Gosofast puts a new engine in his car. The car has a mass of 2500 kg and this engine can generate up to 8750 N of force. Theoretically, how much acceleration could Arnie get from his car?

15. Centripetal Force
Force that keeps an object moving in a circle
The force points toward the center of the circle