According to the law of conservation of momentum, what is the momentum of the object after the collision?4,500 g · m/s1,750 g · m/s1,500 kg · m/s3,000 kg · m/s

Solve the problem by making up an equation. a man could arrive on time for an appointment if he drove the car at 40 mph; however, since he left the house 15 minutes late, he drove the car at 50 mph and arrive 3 minutes early for the appointment. how far from his house was his appointment?