Find the velocity when the car applies the brake NO) Starting from rest a car accelerates with uniform accelerationof 4 m/s² for 4 seconds along a straight line pain, then thedriver apples the brake to stop the car in another 2Seconds. Determine (a) the fastest speed the car reaches and(b) thethe total distance travelled by the carFORMULASFooV=№2√₂-111 seca) A cc = 4 m /5? for # 4 sedNIN₁ = 4 m/s ²V₁ = 16 m/s4 m/s²4 secnh/s2 sec2 see6 sec1b)a=9-√ →+x = X₁ + X ₂Ax = 1 (Vot VF t2X = Xo + VotV=a•t+ =X ₁ = 0 + 0 + 1 = ( 42**A*X 2 = 0 + 0 + 3² (= X₁ + X₂Ax= 32m +at2) ( 4 ) ² = 32 m) ( 2 ) ² =

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Answered: & for NO) Starting from rest a car…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Find the velocity when the car applies the brake

NO) Starting from rest a car accelerates with uniform acceleration
of 4 m/s² for 4 seconds along a straight line pain, then the
driver apples the brake to stop the car in another 2
Seconds. Determine (a) the fastest speed the car reaches and
(b) the
the total distance travelled by the car
FORMULAS
Fo
o
V
=
№2
√₂-1
11 sec
a) A cc = 4 m /5? for # 4 sed
NI
N₁ = 4 m/s ²
V₁ = 16 m/s
4 m/s²4 sec
nh/s
2 sec
2 see
6 sec
1
b)
a=
9-√ →
+
x = X₁ + X ₂
Ax = 1 (Vot VF t
2
X = Xo + Vot
V=a•t
+ =
X ₁ = 0 + 0 + 1 = ( 4
2
*
*A*
X 2 = 0 + 0 + 3² (
= X₁ + X₂
Ax= 32m +
at
2
) ( 4 ) ² = 32 m
) ( 2 ) ² =

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So, what formula do you apply to get 16 m ? I was using the formula of the distance when: x=inicial distance +initial velocity (t) +1/2 at^2. And if I do that I got the same answer which is 16, but only if I put the initial velocity zero.Which I don't think it's zero.

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