00:01
How much farther did the ball travel on the moon than it would have on earth? okay, so let's solve this problem.
00:10
We're going to need our expression for range.
00:13
Our range expression on earth is going to be our speed 30 meters per second squared times sine of two times our angle 20 degrees divided by g, which is just gravity.
00:26
So let's plug in our values.
00:28
We have our value 30 squared times.
00:31
Sign of 40 divided by 9 .8 and so we get 59 .03 meters as our range on earth.
00:43
But our range on the moon is different.
00:46
We're going to have our 30 squared times sign of 40 degrees divided by 9 .8 divided by 6.
00:55
So now we're going to have our 9 .8 divided by 6 and our range is 354 .1 meters.
01:02
This is a bigger range.
01:05
So now our difference in our range, delta r, is our 354 .1 minus 59 .03 meters...