Atrain is traveling at a speed of
8
0
km
h
80
h
km
80, space, start fraction, k, m, divided by, h, end fraction when the conductor applies the brakes. the train slows with a constant acceleration of magnitude
0
.
5
m
s
2
0.5
s
2

m
0, point, 5, space, start fraction, m, divided by, s, start superscript, 2, end superscript, end fraction. we want to find the distance the train travels from the time the conductor applies the brakes until the train comes to a complete stop.
which kinematic formula would be most useful to solve for the target unknown?

Distance covered by the train, x = 493.72 meters

Explanation:

It is given that,

Initial speed of the train, u = 80 km/h = 22.22 m/s

Final speed of the train, v = 0 (it stops)

Acceleration of the train, (it decelerates)

Let x is the distance the train travels from the time the conductor applies the brakes until the train comes to a complete stop. It can be calculated using the kinematic formula as :

x = 493.72 meters

So, the distance covered by the train from the time the conductor applies the brakes until the train comes to a complete stop is 493.72 meters. Hence, this is the required solution.

from

explanation:

wind is defined by the direction it blows from.   for example, a wind blowing from north to south is called a northerly wind.

a solenoid is created by wrapping a l = 90 m long wire around a hollow tube of diameter d = 4.5 cm.   the wire diameter is d = 0.9 mm.   the solenoid wire is then connected to a power supply so that a current of i = 9 a flows through the wire.

randomized variablesl = 90 m

d = 4.5 cm

d = 0.9 mm

i = 9 a                                          

write an expression for the number of turns, n, in the solenoid. you do not need to take into account the diameter of the wire in this calculation.

calculate the number of turns, n, in the solenoid.

write an expression for the length of the solenoid (l2) in terms of the diameter of the hollow tube d.

calculate the length of the solenoid (l2)   in meters.

calculate the magnitude of the magnetic field at the center of the solenoid in teslas.

explanation: