A car accelerates from rest at a constant rate of 2 m / s2 from sometime. then, it retards at a constant rate of 4 m / S2 and comes to rest if it remains in motion for 3 second, then the maximum speed attained by the car is
Anoop , 6 Years ago
Grade 12
1 Answers
P v aditya
Last Activity: 6 Years ago
Let acceleration be for t secnds..So deceleratn wd be for 3-t seconds.Using kinematic equations.. we can find the max speed.V= u+at》v= 0+2tAnd now 0= 2t-4(3-t)》 t=2sec.So, V=2t=4m/sec