A truck on a straight road starts from rest, accelerating at 2.00 m/s^2 until it reaches a speed of 20.0 m/s. Then the truck travels for 20.0s at constant speed until the brakes are applied, stopping the truck in a uniform manner in an additional 5.00s.  a.) How long is the truck in motion?

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Chapter1: Units And Measurement
Section: Chapter Questions
Problem 81AP: Consider the equation s=s0+v0t+a0t2/2+j0t3/6+s0t4/24+ct5/120 , were s is a length and t is a time....
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A truck on a straight road starts from rest, accelerating at 2.00 m/s^2 until it reaches a speed of 20.0 m/s. Then the truck travels for 20.0s at constant speed until the brakes are applied, stopping the truck in a uniform manner in an additional 5.00s. 

a.) How long is the truck in motion?

Need assistance with this question on how to do it. Thank you. I was told to use kinematic equation and to answer in SI unit. 

Δχ _ Xς - Χι
t₁- ti
Δx = vot + .5at2
Leave all answers in SI units
v===
At
Kinematic equations for one dimension
Δυν, - ν
=
ΔΕ
a =
t₁- ti
v2 = v2 + 2αΔx
v = Vo + at
g = 9.8 m/s2 = 32ft/s2
Transcribed Image Text:Δχ _ Xς - Χι t₁- ti Δx = vot + .5at2 Leave all answers in SI units v=== At Kinematic equations for one dimension Δυν, - ν = ΔΕ a = t₁- ti v2 = v2 + 2αΔx v = Vo + at g = 9.8 m/s2 = 32ft/s2
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