force and motion december 2014 benchmark review. formula triangle f=ma f=ma m=f/a a=f/m use your...
TRANSCRIPT
![Page 1: Force and Motion December 2014 Benchmark Review. Formula Triangle F=ma F=ma m=F/a a=F/m Use your finger to cover the value you are looking for. If the](https://reader035.vdocuments.net/reader035/viewer/2022070407/56649e105503460f94afb528/html5/thumbnails/1.jpg)
Force and MotionDecember 2014 Benchmark Review
![Page 2: Force and Motion December 2014 Benchmark Review. Formula Triangle F=ma F=ma m=F/a a=F/m Use your finger to cover the value you are looking for. If the](https://reader035.vdocuments.net/reader035/viewer/2022070407/56649e105503460f94afb528/html5/thumbnails/2.jpg)
Formula TriangleF=ma
F=ma m=F/a a=F/m
Use your finger to cover the value you are looking for. If the values you already have are next to each other, you multiply. If they are above and below each other, you divide.
![Page 3: Force and Motion December 2014 Benchmark Review. Formula Triangle F=ma F=ma m=F/a a=F/m Use your finger to cover the value you are looking for. If the](https://reader035.vdocuments.net/reader035/viewer/2022070407/56649e105503460f94afb528/html5/thumbnails/3.jpg)
Calculate the Mass for the object below(yes, I know it says acceleration on the paper)
Force (N)
Acceleration (m/s2)
5 2.5
10 5
20 10
30 15 Mass = Force/Acceleration
Force (N)
Acceleration (m/s2)
Mass(Kg)
5 2.5 2
10 5 2
20 10 2
30 15 2
![Page 4: Force and Motion December 2014 Benchmark Review. Formula Triangle F=ma F=ma m=F/a a=F/m Use your finger to cover the value you are looking for. If the](https://reader035.vdocuments.net/reader035/viewer/2022070407/56649e105503460f94afb528/html5/thumbnails/4.jpg)
Formula TriangleS=d/t
Use your finger to cover the value you are looking for. If the values you already have are next to each other, you multiply. If they are above and below each other, you divide.
![Page 5: Force and Motion December 2014 Benchmark Review. Formula Triangle F=ma F=ma m=F/a a=F/m Use your finger to cover the value you are looking for. If the](https://reader035.vdocuments.net/reader035/viewer/2022070407/56649e105503460f94afb528/html5/thumbnails/5.jpg)
Calculating Speed
Speed= 200,000 km/s
time=2 sec
distance= 400,000 km
200,000 km/s
2s
![Page 6: Force and Motion December 2014 Benchmark Review. Formula Triangle F=ma F=ma m=F/a a=F/m Use your finger to cover the value you are looking for. If the](https://reader035.vdocuments.net/reader035/viewer/2022070407/56649e105503460f94afb528/html5/thumbnails/6.jpg)
Speed Graph
9:30 to 10:00
Distance = 0 (object did not move)
Time = 0.5 hr
S=d/t
S= 0km/.5hr = 0 km/hr
![Page 7: Force and Motion December 2014 Benchmark Review. Formula Triangle F=ma F=ma m=F/a a=F/m Use your finger to cover the value you are looking for. If the](https://reader035.vdocuments.net/reader035/viewer/2022070407/56649e105503460f94afb528/html5/thumbnails/7.jpg)
Speed Graph
10:00 to 11:00
Distance = 100km – 60km = 40 km
Time = 1 hr
S=d/t
S= 40km/1hr = 40 km/hr
![Page 8: Force and Motion December 2014 Benchmark Review. Formula Triangle F=ma F=ma m=F/a a=F/m Use your finger to cover the value you are looking for. If the](https://reader035.vdocuments.net/reader035/viewer/2022070407/56649e105503460f94afb528/html5/thumbnails/8.jpg)
Speed Graph
10:00 to 12:00
Distance = 60km – 20km = 40 km
Time = 2 hr
S=d/t
S= 40km/2hr = 20 km/hr
![Page 9: Force and Motion December 2014 Benchmark Review. Formula Triangle F=ma F=ma m=F/a a=F/m Use your finger to cover the value you are looking for. If the](https://reader035.vdocuments.net/reader035/viewer/2022070407/56649e105503460f94afb528/html5/thumbnails/9.jpg)
Speed Graph
The object moves at a steady rate from 8:45 to 9:30. The object is then at rest for 30 minutes, then continues at a slower steady rate for 1 hour. The object stops briefly, then returns to the starting point at a faster steady rate.
![Page 10: Force and Motion December 2014 Benchmark Review. Formula Triangle F=ma F=ma m=F/a a=F/m Use your finger to cover the value you are looking for. If the](https://reader035.vdocuments.net/reader035/viewer/2022070407/56649e105503460f94afb528/html5/thumbnails/10.jpg)
Net Force Diagram
Draw a diagram which shows an object being pushed to the right with a force of 6 newtons and to the left with a force of 3 newtons. Which way will the object move? Will the object’s speed increase, decrease, or remain constant?
6N 3N
The object will accelerate (move with increasing speed) to the right because the greater force is pushing to the right.
![Page 11: Force and Motion December 2014 Benchmark Review. Formula Triangle F=ma F=ma m=F/a a=F/m Use your finger to cover the value you are looking for. If the](https://reader035.vdocuments.net/reader035/viewer/2022070407/56649e105503460f94afb528/html5/thumbnails/11.jpg)
How does the force of an object affect the object’s speed?
The more force that is applied to an object, the fast it will go.(Newton’s 2nd Law)
![Page 12: Force and Motion December 2014 Benchmark Review. Formula Triangle F=ma F=ma m=F/a a=F/m Use your finger to cover the value you are looking for. If the](https://reader035.vdocuments.net/reader035/viewer/2022070407/56649e105503460f94afb528/html5/thumbnails/12.jpg)
Distance / Time GraphType of Line Increase or Decrease
or Constant
Constant Speed
No Change in Motion
Constant Speed
![Page 13: Force and Motion December 2014 Benchmark Review. Formula Triangle F=ma F=ma m=F/a a=F/m Use your finger to cover the value you are looking for. If the](https://reader035.vdocuments.net/reader035/viewer/2022070407/56649e105503460f94afb528/html5/thumbnails/13.jpg)
Velocity / Time Graph
Type of Line Increase or Decrease or Constant
Increase Speed
Constant Speed
Decrease Speed
![Page 14: Force and Motion December 2014 Benchmark Review. Formula Triangle F=ma F=ma m=F/a a=F/m Use your finger to cover the value you are looking for. If the](https://reader035.vdocuments.net/reader035/viewer/2022070407/56649e105503460f94afb528/html5/thumbnails/14.jpg)
Balanced Forces
Net Force = 0
If forces are BALANCED then there is no change in motion.
![Page 15: Force and Motion December 2014 Benchmark Review. Formula Triangle F=ma F=ma m=F/a a=F/m Use your finger to cover the value you are looking for. If the](https://reader035.vdocuments.net/reader035/viewer/2022070407/56649e105503460f94afb528/html5/thumbnails/15.jpg)
Unbalanced Forces
Net Force= >0
If forces are UNBALANCED, then there is a change in motion.
The object will accelerate in the DIRECTION of the
GREATER force.
Net Force = 3N to the right
![Page 16: Force and Motion December 2014 Benchmark Review. Formula Triangle F=ma F=ma m=F/a a=F/m Use your finger to cover the value you are looking for. If the](https://reader035.vdocuments.net/reader035/viewer/2022070407/56649e105503460f94afb528/html5/thumbnails/16.jpg)
Newton’s 1st Law
Law of Inertia
An object at rest stays at rest and an object in motion stays in motion unless acted upon by an unbalanced force.
When a car stops suddenly, your body wants to continue to move forward until an outside force (hopefully a seat belt) stops it
![Page 17: Force and Motion December 2014 Benchmark Review. Formula Triangle F=ma F=ma m=F/a a=F/m Use your finger to cover the value you are looking for. If the](https://reader035.vdocuments.net/reader035/viewer/2022070407/56649e105503460f94afb528/html5/thumbnails/17.jpg)
Newton’s 2nd Law
F=ma
The acceleration of an object is dependent upon two variables – the net force acting upon the object and the mass of the object.
A rock with a larger mass will require more force to move.
![Page 18: Force and Motion December 2014 Benchmark Review. Formula Triangle F=ma F=ma m=F/a a=F/m Use your finger to cover the value you are looking for. If the](https://reader035.vdocuments.net/reader035/viewer/2022070407/56649e105503460f94afb528/html5/thumbnails/18.jpg)
Newton’s 3rd Law
Action / Reaction
For every action there is an equal and opposite reaction
A rockets thrust goes downward to push the rocket upward