- #1

soul5

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## Homework Statement

When a high-speed passenger train traveling at 158 km/h rounds a bend, the engineer is shocked to see that a locomotive has improperly entered onto the track from a siding and is a distance D = 699 m ahead. The locomotive is moving at 27.2 km/h. The engineer of the high-speed train immediately applies the brakes.

**What must be the magnitude of the resulting constant deceleration if a collision is to be just avoided?**

## Homework Equations

x = xi + vi * t + 1/2 * a * t ^2

## The Attempt at a Solution

I think you can set that equation equal to each other I don't understand the black part please help me. I think I can use that equation, but how do I find the time? How would I do this question?