A driver of a car traveling at 14.8 m/s applies the brakes, causing a uniform deceleration of 1.9 m/s2 . How long does it take the car to accelerate to a final speed of 10.0 m/s? Answer in units of s.
1 Answer
Dec 9, 2017
Explanation:
Given,
Looking through the 4 Big Kinematic Equations we've
#Deltax=vecv_it+(1/2)at^2# #vecv_f^2=vecv_i^2+2aDeltax# #vecv_f =vecv_i+at# #Deltax = (vecv_i+vecv_f)/2*t#
From these equations and our givens we can use equation number 3. Plugging in the values and solving for