Answer:
It's A trust me! :D
Step-by-step explanation:
Answer:
Square root of 65 or 8.06 to the nearest hundredth.
Step-by-step explanation:
We use the Pythagoras Theorem ( Distance Formula):
This = √ [( x2 - x1)^2 + (y2 - y1)^2 ]
= √ [( 3 - -4)^2 + (-1 - -5)^2]
= √ (7^2 + 4^2)
= √65
= 8.06 to the nearest hundredth.
Answer:10 minutes
Step-by-step explanation:
It is important to notice firs of all that the train with no stop acceleration and them no stop acceleration would have a faster travel between stops. given this is safe to assume that there is a period during while the train is not accelerating nor decelerating. To find the time that is speed is constant
let's assume non-stop accelerating and decelerating and the time lost (subtraction of both) is the time the train had constant speed:
assuming same time accelerating a decelerating we have that the distance is
x = voT + 1/2aT^2 (initiial speed = 0) (0.25 miles = 1320 feets)
1320 = 1/2 (8)(T/2)^2
T/2 = 18.17 seg
T = 36.34 seg
time of constant speed
T = 41 -36.34 = 4.66 seg
maximum speed
v = v0 + aT (initial speed = 0)
v = 8(18.17) (time accelerating)
v = 145.36 feets/sec
distance at full speed
x = v*t
x = 145.36*4.66 = 677.38 feets
