the distance of a planet from its sun is 19000000 miles. if there are 29400000 seconds in one orbit, find the speed of the planet in its orbit about the sun. (assume a circular orbit)
orbit circumference
= 2 pi *1.9*10^7 miles
time for orbit trip = 2.9*10^7 s
speed = 2 pi *1.9 / 2.9 miles/second
= 4.12 miles/second
You did not say what units
in miles per hour, multiply by 3600 and get
14,820 miles/hour
does your instructor teach significant figures?
To find the speed of the planet in its orbit about the sun, we can use the formula:
speed = distance / time
In this case, the distance of the planet from its sun is given as 19,000,000 miles, and the time for one complete orbit is 29,400,000 seconds.
First, let's convert the distance from miles to meters. We know that 1 mile is approximately equal to 1609.34 meters.
So, the distance would be:
distance = 19,000,000 miles * 1609.34 meters/mile
Next, let's convert the time from seconds to hours. There are 60 minutes in an hour and 60 seconds in a minute, so:
time = 29,400,000 seconds / (60 seconds/minute * 60 minutes/hour)
Now, we can calculate the speed:
speed = distance / time
Once you have the distance and time in the appropriate units, simply divide the distance by the time to get the speed in meters per hour.