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What is Exit Velocity? | Neil deGrasse Tyson Explains...

2022-10-21 Science & Technology
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Description

What is exit velocity? On this episode, Neil deGrasse Tyson and co-hosts Chuck Nice and Gary O’Reilly explore parabolas, measuring the speed of an object using the Doppler effect, and other physics in baseball. Is every home run the same? We break down why home runs might be more likely in some stadiums. How fast does the ball have to go to be a home run? We discuss how to measure the speed of the ball as well as calculate it. What launch angle will send a projectile the farthest? Learn why 45 degrees works in a physics textbook but not on the baseball field. How do you capture the exit velocity of the ball? You’ll learn about how doppler radar cameras work. What’s the slowest pitch possible that will still reach home plate? What’s the best height for a batter? We talk strike zones, hit angle, and bat speed. Could a pitcher throw a ball farther than a batter could hit it? What angle do you want the ball to come off the bat? Get the NEW Cosmic Queries book (5/5 ⭐s on Amazon!): https://amzn.to/3dYIEQF Support us on Patreon: https://www.patreon.com/startalkradio FOLLOW or SUBSCRIBE to StarTalk: Twitter: http://twitter.com/startalkradio Facebook: https://www.facebook.com/StarTalk Instagram: https://www.instagram.com/startalk About StarTalk: Science meets pop culture on StarTalk! Astrophysicist & Hayden Planetarium director Neil deGrasse Tyson, his comic co-hosts, guest celebrities & scientists discuss astronomy, physics, and everything else about life in the universe. Keep Looking Up! #StarTalk #neildegrassetyson 00:00 - Are all home runs the same? 02:42 - Doppler radar speed 04:30 - Optimal Angles 12:25 - Angle of the bat

Top Comments (10)

@StarTalk 2022-10-21

Did this help improve you baseball game?

62 33 replies
@mariyamshifhyna2567 2022-10-21

You can use a triangulation technique using multiple doppler detectors installed around the stadium to calculate (using customised software) the maximum velocity (in the direction of the greatest rate of displacement) of the ball

36 5 replies
@kathryntate6809 2022-10-21

Thank you guys for yet another massively enjoyable time!!

26 1 replies
@ScientificGuy 2022-10-21

I like it when your show explains the science behind things that my students can relate to their lives! Thanks NDT and crew!

25 2 replies
@someoneelse2106 2022-10-22

Thank you for showing me that you guys are just like regular people. I get to see inside of a passionate discussion among good friends.

7
@bluesun001 2022-10-21

Hey Neil do you think you could do a StarTalk on how we find the position of an object in a three-dimensional universe also what would be the effects on earth from a Magntare passing through the solar system. Thank u. Big fan.

4
@eagle191 2022-10-26

Two things that you miss Neil, you're not taking into account the velocity of the pitch itself or that the pitch isn't traveling on a horizontal plane, but on a parabolic curve (even for the hardest thrown fastballs). Just considering ball path in launch angle (from the swing plane), the launch angle would actually be closer to that ideal 0° angle.

3
@boogie920 2022-10-22

This sounds like an excellent reason to dismiss a speeding ticket lol!! Thank you for your scholarly information.

2
@MadDragon75 2022-10-21

I was with you Chuck. I saw the title then the question in the comments about "your baseball game" and I was scratching my head. 😂

0
@Coach_Jean 2022-10-27

this one was way more interesting than i thought it would be before i click on this one. great job.

0

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