Motorcycle has a mass of 200 kilograms and a velocity of 10 m/s, what is its momentum? (p=mv)

The answer is 4f======since electrostatic force is given by    we let f be the electrostatic force when  r = 1 m    if we let  denote the electrostatic force when the distance is decreased so that r = 0.5m, then    we established earlier that f = kq₁q₂. therefore    the force will now be 4f.

B? i think so but hope that's right and answers your question