Final answer:
The acceleration rate of a bullet train going from 0 km/hr to 375 km/hr in 15 minutes is 1,500 km/hr². This is found by dividing the change in velocity by the time taken, after converting 15 minutes to 0.25 hours.
Step-by-step explanation:
The student is asking about the acceleration rate of a bullet train that increases its speed from 0 km/hr to 375 km/hr in 15 minutes. To answer this question, we need to first convert the time into hours since the speed is given in km/hr. Fifteen minutes is equal to 0.25 hours. We can then use the formula for acceleration, which is the change in velocity divided by the time taken (acceleration = Δvelocity/time). The calculation will be:
Acceleration = (375 km/hr - 0 km/hr) / 0.25 hours = 375 km/hr / 0.25 hours = 1500 km/hr²
Therefore, the correct option is Option 2: 1,500 km/hr².