![Page 1: Chapter 14, Lesson 2 Newton’s Second and Third Laws of Motion](https://reader036.vdocument.in/reader036/viewer/2022062410/56815d16550346895dcb18df/html5/thumbnails/1.jpg)
Chapter 14, Lesson
2Newton’s Second
and Third Laws of Motion
massacceleration/forceacceleration/massbalanced forces
unbalanced forcesmomentum
actionreaction
worksimple machines
leverfulcrum
effort armresistance arm
pulleywheel and axleinclined plane
wedge screw
![Page 2: Chapter 14, Lesson 2 Newton’s Second and Third Laws of Motion](https://reader036.vdocument.in/reader036/viewer/2022062410/56815d16550346895dcb18df/html5/thumbnails/2.jpg)
mass – A measure of the amount of matter in an object. The mass of an
object is related to the force required to accelerate it.
![Page 3: Chapter 14, Lesson 2 Newton’s Second and Third Laws of Motion](https://reader036.vdocument.in/reader036/viewer/2022062410/56815d16550346895dcb18df/html5/thumbnails/3.jpg)
acceleration/force – the more force you apply, the greater the
acceleration
Click on the picture for some great questions about acceleration and force!
![Page 4: Chapter 14, Lesson 2 Newton’s Second and Third Laws of Motion](https://reader036.vdocument.in/reader036/viewer/2022062410/56815d16550346895dcb18df/html5/thumbnails/4.jpg)
acceleration/mass – the greater the mass, the more force necessary to
get an object to accelerate
Click on the picture!
![Page 5: Chapter 14, Lesson 2 Newton’s Second and Third Laws of Motion](https://reader036.vdocument.in/reader036/viewer/2022062410/56815d16550346895dcb18df/html5/thumbnails/5.jpg)
balanced forces – when all the forces on an object cancel each other out, you have balanced
forces – no acceleration, no momentum
Click on the picture for some great questions about balanced and unbalanced forces.
![Page 6: Chapter 14, Lesson 2 Newton’s Second and Third Laws of Motion](https://reader036.vdocument.in/reader036/viewer/2022062410/56815d16550346895dcb18df/html5/thumbnails/6.jpg)
unbalanced forces – when forces don’t cancel each other out, there is movement. This is a
result of unbalanced forces.
Click on the picture for some information about unbalanced forces.
Click on the picture for some information about kinds of forces.
![Page 7: Chapter 14, Lesson 2 Newton’s Second and Third Laws of Motion](https://reader036.vdocument.in/reader036/viewer/2022062410/56815d16550346895dcb18df/html5/thumbnails/7.jpg)
momentum – momentum measures how difficult it will be to stop an object
Click on the picture for some information about momentum.
![Page 8: Chapter 14, Lesson 2 Newton’s Second and Third Laws of Motion](https://reader036.vdocument.in/reader036/viewer/2022062410/56815d16550346895dcb18df/html5/thumbnails/8.jpg)
action – when one object applies a force to another object
![Page 9: Chapter 14, Lesson 2 Newton’s Second and Third Laws of Motion](https://reader036.vdocument.in/reader036/viewer/2022062410/56815d16550346895dcb18df/html5/thumbnails/9.jpg)
reaction – the force the second thing returns (the result of an
action)
![Page 10: Chapter 14, Lesson 2 Newton’s Second and Third Laws of Motion](https://reader036.vdocument.in/reader036/viewer/2022062410/56815d16550346895dcb18df/html5/thumbnails/10.jpg)
work – using force to move an object through a distance
![Page 11: Chapter 14, Lesson 2 Newton’s Second and Third Laws of Motion](https://reader036.vdocument.in/reader036/viewer/2022062410/56815d16550346895dcb18df/html5/thumbnails/11.jpg)
simple machines – devices with few moving parts that make
work easier to do.
Click on the picture for some information about simple machines.
![Page 12: Chapter 14, Lesson 2 Newton’s Second and Third Laws of Motion](https://reader036.vdocument.in/reader036/viewer/2022062410/56815d16550346895dcb18df/html5/thumbnails/12.jpg)
lever – a rigid (solid, hard) bar that rests on a pivot point
Click on the picture for directions on how to build a lever.
Click on the picture for some contraption videos using simple machines. Built by kids!
Click on the picture for a video on levers.
![Page 13: Chapter 14, Lesson 2 Newton’s Second and Third Laws of Motion](https://reader036.vdocument.in/reader036/viewer/2022062410/56815d16550346895dcb18df/html5/thumbnails/13.jpg)
fulcrum – a pivot point that a lever rests on. The (triangle in
the diagrams below.)
Click on the picture for directions on how to build a lever.
Click on the picture for some contraption videos using simple machines. Built by kids!
![Page 14: Chapter 14, Lesson 2 Newton’s Second and Third Laws of Motion](https://reader036.vdocument.in/reader036/viewer/2022062410/56815d16550346895dcb18df/html5/thumbnails/14.jpg)
effort arm – the part of the lever that you apply force to (input
force).
Click on the picture for directions on how to build a lever.
Click on the picture for some contraption videos using simple machines. Built by kids!
![Page 15: Chapter 14, Lesson 2 Newton’s Second and Third Laws of Motion](https://reader036.vdocument.in/reader036/viewer/2022062410/56815d16550346895dcb18df/html5/thumbnails/15.jpg)
resistance arm – the part of the lever that lifts the load (output
force.)
Click on the picture for directions on how to build a lever.
Click on the picture for some contraption videos using simple machines. Built by kids!
![Page 16: Chapter 14, Lesson 2 Newton’s Second and Third Laws of Motion](https://reader036.vdocument.in/reader036/viewer/2022062410/56815d16550346895dcb18df/html5/thumbnails/16.jpg)
inclined plane – a ramp/slope
Click on the picture below watch a video incline planes.
![Page 17: Chapter 14, Lesson 2 Newton’s Second and Third Laws of Motion](https://reader036.vdocument.in/reader036/viewer/2022062410/56815d16550346895dcb18df/html5/thumbnails/17.jpg)
pulley – a wheel with a grove in the rim. A rope fits in the
groove and helps lift the load.Click on the picture below watch a video on pulleys.
![Page 18: Chapter 14, Lesson 2 Newton’s Second and Third Laws of Motion](https://reader036.vdocument.in/reader036/viewer/2022062410/56815d16550346895dcb18df/html5/thumbnails/18.jpg)
wheel and axle – a wheel is a large diameter circle attached to a small diameter axle. A small amount of input force on the wheel creates a
large amount of output on the axle.
Click on the picture to check out a video on screws and wheels.
![Page 19: Chapter 14, Lesson 2 Newton’s Second and Third Laws of Motion](https://reader036.vdocument.in/reader036/viewer/2022062410/56815d16550346895dcb18df/html5/thumbnails/19.jpg)
screw – an inclined plane wrapped in a spiral around a
cylinder or cone.
Click on the picture to check out a video on screws and wheels.
![Page 20: Chapter 14, Lesson 2 Newton’s Second and Third Laws of Motion](https://reader036.vdocument.in/reader036/viewer/2022062410/56815d16550346895dcb18df/html5/thumbnails/20.jpg)
screw – an inclined plane wrapped in a spiral around a
cylinder or cone.
Click on the picture to check out a video on screws and wheels.
![Page 21: Chapter 14, Lesson 2 Newton’s Second and Third Laws of Motion](https://reader036.vdocument.in/reader036/viewer/2022062410/56815d16550346895dcb18df/html5/thumbnails/21.jpg)
wedge – an inclined plane wrapped in a spiral around a
cylinder or cone.
Click on the picture to check out a Bill Nye Videos on simple machines.