JEE Main 2026 · 4 Apr · Shift 2, Physics question 27

Two cars $A$ and $B$ are moving in the same direction along a straight line with speeds 100 km/h and 80 km/h, respectively such that car $A$ is moving ahead of car $B$. A person in car $B$ throws a stone with a speed $v$ so that it hits the car $A$ with a speed of 5 m/s. The value of $v$ is ________ km/h.