When the car will overtake the truck ...following quantities will be same!
1) Both will travel the same distance from the starting point....because ultimately the car catches the truck..(let say h )
2) Both will travel for the same time because both are starting from at the same time .. ( let say t)
Applying equation for car !
Velcoity (initial) = 0
Acceleration = 2
SO , h = 0 + 0.5(2)(t)2
Hence h = (t)2
Now ...Apply the equation for the truck ..!
Since it travels with a constant velocity 10 , and upto time t hence the distance h will be
h = 10t
Compare both the equations ... 10t = t2
t = 10 sec..
And thus the distance will be 10*10 = 100 m