Noah and ryan left seattle at one in the afternoon, traveling in opposite directions. at 5 pm, they were 320 kilometers apart. of ryan's rate of speed is three times that of noah's, what is noah's speed?

Noah's speed is 20km/hr

Explanation:

Given;

Final Distance between them at 5pm =320km

Time of travel = 5pm - 1pm = 4 hours

Let x represent Noah's speed

The Ryan's speed = 3x

Total distance between them in 4hours given that they are traveling at opposite directions is.

Distance = speed × time

(x + 3x) × 4hours = 320km

4x × 4 hours = 320km

x = 320km/(4×4hours)

x = 20km/hr

Noah's speed is 20km/hr

6/12=1/2

step-by-step explanation:

initial speed when it is dropped is 150 ft/s

now at the same moment the acceleration due to gravity is perpendicular to its velocity

so as we know that

now we have centripetal acceleration a = 32 ft/s^2 as its perpendicular to velocity

while tangential acceleration at the same moment will be zero

so

now radius of curvature is given as

so the radius of curvature just after it is dropped is 703.125 ft