Kinetic energy possessed by moving train is

.
And mass

.
The formula for kinetic energy is

.
Solve for velocity:


Now put in the data:
A=l*w
161=14w
161/14=w
11.5cm is the width
Answer:
The answer is 42.
Step-by-step explanation:
5n - 13 = 42
5n = 42 + 13
5n = 55
n = 11
explanation about the solution = The angles formed by the segments measuring 42 and 5n - 13 are equal in measure which means the segments are as well.
Find how many numbers are divisible by two and three, then place that number above the total number of items in the set as a fraction. Like this:
Answer:
15
Step-by-step explanation:
Use the Pythagorean Thereom:
=
+
= 81+144
= 225
= 15
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