The driver of a train moving at 18 m/s applies the brakes when it passes an amber signal.. signal is 1 km down the track and the train reaches it 79 s later. (a) Find the train's accele its speed at the next signal. (a) a= m/s² (b) ₂ = m/s

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter7: Exponents And Exponential Functions
Section7.8: Transforming Exponential Expressions
Problem 15PFA
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Round your answers to three significant figures.
The driver of a train moving at 18 m/s applies the brakes when it passes an amber signal. The next
signal is 1 km down the track and the train reaches it 79 s later. (a) Find the train's acceleration and (b)
its speed at the next signal.
(a) a =
m/s²
(b) ₂ =
m/s
Transcribed Image Text:Round your answers to three significant figures. The driver of a train moving at 18 m/s applies the brakes when it passes an amber signal. The next signal is 1 km down the track and the train reaches it 79 s later. (a) Find the train's acceleration and (b) its speed at the next signal. (a) a = m/s² (b) ₂ = m/s
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