Posted by **DANNY** on Wednesday, June 5, 2013 at 10:20pm.

1. A train traveling at a speed of 150km/h decelerates for 15 seconds. During that time it travels 400 meters.

A) What is the acceleration? = m/s^2

B) What is its speed after deceleration? = km/h

I need help with which formula to use and how to use it to find the correct answer. Thank you.

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