Kinematics+Collaborative+Page

This is the Kinematics page. Add something (video, picture, article) pertaining to kinematics, and EXPLAIN the physics involved in some way.
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The video shows the amazing velocities these falcons can reach (242 mph). These huge velocities are attained when the falcon "free-falls" like a stone. We would determine the velocity of the falling falcon using Vf ^2 = vi ^2 + 2ad, where vi would be zero. If you actually plug numbers into this (say 1km for d) you realize that the falcon should be able to reach velocities MUCH higher than 242 mph. The reason is doesn't is because of a principle known as terminal velocity. A falling object in a medium (air) can reach a maximum speed because as its velocity increases so does the air friction force on the object. In the case of the falcon, when the friction force of the air balances the force of gravity, the falcons velocity ceases to increase - we then say the falcon is at terminal velocity.

This is the CN Tower, it is 553.3m talls. If you were to throw an object off of it at 20 m/s, how long would it take for the object to reach the ground? To answer this question you would use the equation: d=Vit+1/2at2. Vi= 20m/s d=553.3m a=-9.81m/s2 t=? By:Lindsey Hartfelder



If the tennis ball was hit at an initial velocity of 50m/s. if you break that velocity into components with trigonometry you can find the range with Dx=Vt and you can find the height and time with Dy=tViy+1/2 at 2. By: Trevor Fandrick.



The cue ball has an initial velocity of 0m/s. It is struck by the cue and accelerates until it strikes the nine ball. It then changes direction and it slows down to a complete stop. To find the displacement of this picture you would have to break it into components and then use trigonometry to solve. The formulas you would use would be: a2 + b2 = c2 and SOH CAH TOA. Kevin Murphy . media type="youtube" key="BBsgTXSbHI0?fs=1" height="385" width="640"

How to determine the acceleration of the car. The worlds fastest car can reach a speed of 407km/h. We also know the initial velocity is 200km/h due to the fact in the video on the curve he had to go 200km/h before going onto the 5km section. We know the track is 5km long due to the video saying so we can find the acceleration of the car by using Vf2=Vi2+2ad. We will have to rearrange for acceleration. Now if we wanted to we could also find the time now due to the fact we have our Acceleration our Vf and Vi. A=Vf-Vi/t. We need to rearrange for t in this case.

Matthew Ankertein

This is the SR 71 Blackbird and it holds the record for the fastest air breathing manned aircraft and it can travel up to Mach 3.2 (2,200 mph) at 80,000 ft. To find out how far this aircraft could travel in one second you could use the following formula:d= (vf+vi)t/ 2. vf would be 2200mph which you can convert to m/s, and vi would be 0. You would simply have to plug in the numbers. Of coarse to reach these speeds special materials are needed, otherwise someone couldv'e beat the record set in 1960. Also its dangerous for the pilot, imagine having to be ejected at these speeds! You could figure out long it would take you to reach the ground when ejected from 80000ft using the following formula: d=vit+1/2at2, but it would require some rearranging of the formula, and you would have to assume vi is 0. This is why they had special suits. Jenn Buss

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I am going to find Usain Bolt's average velocity then I will find his average acceleration and then his final velocity for the entire run. So first his average velocity I will use Vave= d/t. Now his average acceleration is d=Vit+1/2at2 Now I will calculate his final velocity with a=v/t. This is how I would find the average velocity, average acceleration and the final velocity of usain bolt. Which Usaine Bolt is the fastest runner in the whole world.

Vi= 0m/s, t= 9.7s, d= 100m

Mac Morgan



The angular velocity vector **Ω** points up for counterclockwise rotation and down for clockwise rotation, as specified by the right hand rule. Angular position //θ//(//t//) changes with time at a rate //ω//(//t//) = d//θ///d//t//.

Eric Stene

= An unnamed juvenile delinquent was being chased. Seeing an angry lynch mob catching up to him, he begins running from his rest stop at 10 m/s, a reduced speed because of the massive statue of Mr. Brehmer, supreme ruler of this wikipage he stole. The mob running after him had a constant velocity of 13 m/s. If the mob started 50m behind this unnamed individual, how long does it take for them to overtake him? =

- TheBaldEaglet



If the tiger runs to the person from rest to a velocity of 40m/s in a time of 25s what is the acceleration of the tiger? You would use the formula a=v**/**t The work would be a=40m/s**/**25s and a would equal a= 1.6m/s2

VICTORIA POPIK



The picture above illustrates, Usian bolt running in the 100m dash in the Olympics. That represents d for distance, his time was 9.76 seconds, his vi was 0. To find his final velocity, you must find his acceleration. After we have the acceleration, we can use the forumula d=ft-1/2at2. Using this formula, we can rearrange for vf by itself to find his velocity final.

Luke Easton Wurban



The Burf Khalifa is the tallest man-made structure ever built standing at 828m. How far away from the building would an object land if it were thrown from the top of the Burf Khalifa at 25m/s? A=-9.81m/s2 Vx=25m/s Dy=828m Viy=0m/s

Dy=viyt + ½ at2 828m=0+1/2(-9.81m/s2)t2 __828m__= __(-4.905m/s2)__ t2 -4.905 -4.905 √(168.8073394)=√t2 T=12.99258786s

Dx=vt Dx=(25m/s)(12.99258786s) Dx=324.8146966m __ Dx=3.2 x 102m __

-Maria Makepeace