1. Newton’s 2nd Law
Acceleration and Mass

2. Newton’s 2nd Law
Force = mass x acceleration
- The acceleration of an object depends on its mass and the force applied to it.

3. Newton’s 2nd Law Part 1
Acceleration depends on mass (inverse relationship).

4. Newton’s 2nd Law Part 1
Pushed with same force, acceleration decreases as mass increases and vice versa.

5. Acceleration depends on force (direct relationship)
Newton’s 2nd Law Part 2
Acceleration depends on force (direct relationship)

6. As force on an object increases, acceleration increases
Newton’s 2nd Law Part 2
As force on an object increases, acceleration increases

7. As force on an object decreases, acceleration decreases
Newton’s 2nd Law part 2
As force on an object decreases, acceleration decreases

8. Equation for Newton’s 2nd Law
Force= Mass x Acceleration
Mass = Force / Acceleration
Acceleration = Force / Mass

9. Unit of Force
Newton (N)

10. Rocket Videos
Same Force but different Masses
Results in greater acceleration for the smaller rocket

11. Practice Problem F=MxA
What force is necessary to accelerate a 1,000kg car at a rate of 40m/s/s?
1,000kg x 40m/s/s=
40,000N

12. Practice Problem 2
A=F/M
What is the acceleration of a 7kg mass if a force of 42N is used to move it toward Earth?
42N / 7kg=
6m/s/s