At he instant a motor bike starts from rest in a given direction, a car overtakes the motor bike, both moving in the same direction. The speed-time graphs for motor bike and car are represented by 𝑂𝐴𝐵 and 𝐶𝐷 respectively.

Question : At he instant a motor bike starts from rest in a given direction, a car overtakes the motor bike, both moving in the same direction. The speed-time graphs for motor bike and car are represented by 𝑂𝐴𝐵 and 𝐶𝐷 respectively.

(A) At t= 18 s the motor bike and car are 180m apart

(B) At 𝑡 = 18 s the motor bike and car are 720m apart

(C) The relative distance between motor bike and car reduces to zero at 𝑡 = 27 s and both are 1080m far from origin

(D) The relative distance between motor bike and car always remains same

Solution :