Answer:
Momentum of train = mass of train x velocity of train
Momentum of train = (2.6 x 10^5 kg) x (11.63 m/s)
Momentum of train = 3.022 x 10^6 kg·m/s
To find the velocity of the car that would have the same momentum as the train, we can rearrange the formula to:
Velocity of car = Momentum of train / Mass of car
Velocity of car = (3.022 x 10^6 kg·m/s) / (4.7 x 10^3 kg)
Velocity of car = 642.98 m/s
Therefore, the car would have to travel at a speed of approximately 643 m/s or 1,438 mph (miles per hour) to have the same momentum as the train.