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A car starts from rest and travels for 5.0s with a uniform acceleration of 1.5 m/s2. The driver then applies the brakes, causing a uniform acceleration of -2.0 m/s2. If the brakes are applied for 3.0 s 

(a) how fast is the car going at the end of the braking period?

(b) how far has the car gone?

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Anil Kumar G.
Anil Kumar G.Lv10
2 Jan 2021

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Related textbook solutions

Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

Related questions

A truck on a straight road starts from rest and accelerates at 2.0m/s2 until it reaches a speed of 20m/s. Then the truck travels for 20 s at a constant speed until the brakes are applied, stopping the truck in a uniform manner in an additional 5.0s s. (a) How long is the truck in motion? (b) What is the average velocity of the truck during the motion described?

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I am obviously using the formula wrong.. wouldn't it be d=at^2

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