0
Rate this Study Guide:
☆☆☆☆☆((60m/s+80m/s)/2)x12s=840m
It will take a sailboat 24 hours traveling at 5 miles per hour to sail 120 miles.
60 mile/hour x 5280 ft/1 mi x 1hour/3600 seconds = 88 ft/second
420 miles
Time = Distance/Speed = 300 miles/60 mph = 5 hours
The average uninformed acceleration is (delta-V) / (delta-T). Delta-V = (96 - 32) = 64 m/s. Delta-T = 8.0 seconds. A = (64 m/s) / (8.0 sec) = 8 m/s2
You've done 600 miles in a total of 12 hours, therefore your average speed was 600/12 = 50 mph.
5 ft/sec,north
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
4.60
Assuming the question is refering to feet PER second and miles PER hour,
176 fps = 120 mph
If it accelerates from 75 m/s to 145 m/s at a uniform rate, then its average speed during
the acceleration is 0.5(145+75) = 110 m/s.
Distance covered in 15 sec at average speed of 110 m/s = (15 x 110) = 1,650 m = 1.65 km.
-2 m/s^2
25 m/s
We're missing a value, we'll need the distance traveled to determine that.
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.
verga
1800 meters
