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((60m/s+80m/s)/2)x12s=840m
4.6ms
It will take a sailboat 24 hours traveling at 5 miles per hour to sail 120 miles.
When you convert it, you will find out that they're all the same.
Sine of the angle to its cosine.
The hypotenuse is: 10
3.229 miles/hour
If a right triangle is 12.5 meters and the side opposite a 30 angle, the hypotenuse length will be: 14.43 meters.
Assuming that his acceleration was linear (ie. that he slowed down at a perfectly steady rate), then you can say his velocity at any point in those eight seconds was:
21 - t(21 / 8) m/s
To get the distance covered in that time, you can simply take the area under that line between 0 seconds and eight seconds. Because it's linear, this is very easy. You're dealing with a right triangle that is 8 seconds wide and 21 meters per second tall. With a triangle, the area is equal to half it's width times it's height, so the equation is:
d = 21m/s * 8s / 2
∴d = 168m / 2
∴d = 84m.
So he traveled 84 meters in those 8 seconds, and probably scared the bejeebers out of that poor deer.
Average speed = 21/2 m/s , Time =8 s, Distance = 8 x 21/2 = 84m
-80/10 = -8 m/s2
milli
Vector, magnitude and direction.
If you drive a car at 40 miles per hour for two hours,then the distance covered will be 80 miles.If you drive the car for another 2 hours at 60 miles per hour ,then you will cover another 120 miles.The total distance you will cover is thus 80 miles + 120 miles = 200 miles.
A scalar has distance but no direction.
A vector has distance and direction.
"12 feet up" has distance (12 feet) and direction (up), so is a vector.
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tan(23) = 1.58815308
