please solve this problem
Answers
Answer:
Let acceleration of train be a, and length of train be l .
The train changes in velocity from 6 to 8 kph after traveling a distance of l while experiencing acceleration of a. Since acceleration is constant and there is no mention of time, we can use the formula
v2=u2+2as
Where v is final velocity, u is initial velocity, a is acceleration, and s is displacement(in this case, distance). Substitute the given values and we get:
82=62+2al
64−36=2al
14=al
Now, we want to find the velocity of the train when it is halfway over the point, in other words, when the distance traveled is 0.5l . We can use the same formula to calculate the velocity by using this distance.
v2=62+2a(0.5l)
v2=36+al
v=√(36+14)=√50 which is around 7.07.
Answer:
The old woman looked___the Children
Step-by-step explanation:
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