She's officially 5 and starting Kindergarden. He's a lover and a fighter.

Tuesday, December 04, 2007

The Little Einsteins Physics Question

A prize to whoever figures this out.

OK... we have a kid’s show Riley watches called Little Einsteins. In one episode, the kid's Rocket has made a batch of rocket soup for Grandma Rocket. But it's stolen by Big Jet. They finally catch big jet, and scare him, and he drops the rocket soup while hovering in the sky. The soup begins to fall.

Now, with Rocket it takes a while to get up to full speed. You have to pat hands to get up to speed from Adagio, Moderato, Allegro and then Presto! Presto is full speed for Rocket.

So, here's the timeline of things.

Big Jet drops the stock pot of Rocket soup.

The kids slowly ramp up Rocket until he hits Presto! Full speed. To go that fast, it appears they travel in a straight line, parallel with the earth, as the pot of soup hurdles towards the earth.

(I assume) they make some sort of quick, rounded turn and catch the pot of Rocket Soup just a few feet off the ground. Hooray!

How fast and how far does Rocket have to travel, if the pot of soup drops for about 90 seconds?

How fast and how far does the pot fall?

According to Wikkipedia: ignoring air resistance, an object falling freely near the earth's surface increases its velocity with 9.8 m/s (32 ft/s or 22 mi/h) for each second of its descent. Thus, an object starting from rest will attain a velocity of 9.8 m/s (32 ft/s) after one second, 19.6 m/s (64 ft/s) after two seconds, and so on, adding 9.8 m/s to each resulting velocity.

So, 9.8m to the 90th power?
32 ft to the 90th power? One mile equals 5,280 feet.
I'm not good enough at math to figure this out and Jodie refuses to indulge me. HELP!

2 Comments:

  • Brian - I don't know about your math question, my wife would help either. But... if you watch this video, it might help: http://www.youtube.com/watch?v=PGT71Zv2tGU

    Eric

    By Blogger NolanJunk Blog, at 10:46 AM  

  • It would help if I could type. I was trying to say, "my wife wouldn't help either". Oh well... good luck on your quest.

    By Blogger NolanJunk Blog, at 4:59 PM  

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