Answer:
Explanation:
If the dragster Β attains the speed equal to that of the car which is moving with constant velocity of vβ , before the two close in contact with each othe , there will not be collision .
So the dragster starting from rest , must attain the velocity vβ in the maximum time given that is tmax .
v = u + a t
vβ = 0 + a tmax
tmax = vβ / a
The value of tmax is vβ / a .