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If a car accelerates from rest at a constant 3.0 m/s/s(3.0m/s^2) A. how long will be required to each 15 m/s B. What distance does the car travel in the 15 minutes?

If a car accelerates from rest at a constant 3.0 m/s/s(3.0m/s^2) A. how long will be required to each 15 m/s B. What distance does the car travel in the 15 minu class=

Answer :

Answer: a. 5 seconds

              b. 810,000 meters

Explanation:

Part a:

Listing everything is gives you:

Vi = 0

a = 3

Vf = 15

t = ?

Choose a kinematic equation to find the missing variable

I choose this one: Vf = Vi + at

15 = 0 + 3t

solving for t gives you t = 5seconds

Part b:

Listing everything it gives you:

t = 15min = 900seconds

a = 3

vi = 0

Δx = ?

Choose a kinematic equation

I did this one: Δx = Vit+[tex]\frac{1}{2} at^2[/tex]

Δx = (0)(900) + [tex]\frac{1}{2} (3)(900)^2[/tex]

you end up with Δx = 810,000m

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