Friday
May 24, 2013

# Homework Help: math

Posted by Amina on Monday, June 21, 2010 at 4:40pm.

I'm trying to help my child with this problem..

1.A bird is flying around the world at a rate of 12.2ft/sec. How many days will it take to complete its journey? (circumference of earth=25,000 miles.

2. A deep space probe is traveling at a velocity of 56.2km/s. What is its velocity in miles/mins?

Maybe I'm getting old, but I don't remember having this type of chemistry in class.

• math - Henry, Wednesday, June 23, 2010 at 4:58pm

12.2FT/SEC=0.00231MILES/SEC
=0.00231MILES/(1/60)min
=0.1386miles/1min
=0.1386 MILES/(1/60)hr
=8.316miles/hr

8.316 miles /hr X 24 hrs/da=199.6 miles/da
25000 miles/199.6 miles/da=125 days.

• math - Henry, Wednesday, June 23, 2010 at 5:33pm

1 meter=3.3ft, 56200 meters=185460ft.
56.2km/s=185460ft/s=35.125 miles/s
=35.125miles/(1/60)min
=2107.5 miles/min

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