Herman and his dad are leaving early in the morning for his lacrosse tournament. Their house is 210 miles from the tournament. They plan to stop and eat after 2 hours of driving, then complete the rest of the trip. Herman's dad plans to drive at an average speed of 60 miles per hour. How long will the second part of the trip take?

Write your answer as a whole number or a decimal.
hours

Herman's dad plans to drive at an average speed of 60 miles per hour, so he can cover 2*60 = <<2*60=120>>120 miles in 2 hours.

This means that after driving for 2 hours, they still have 210-120 = <<210-120=90>>90 miles left to drive.
Since Herman's dad plans to drive at an average speed of 60 miles per hour, the rest of the trip will take 90/60 = <<90/60=1.5>>1.5 hours. Answer: \boxed{1.5}.

To find the time it will take for the second part of the trip, we need to subtract the time spent on the first part from the total time it takes to complete the trip.

The first part of the trip is 2 hours of driving, during which they plan to stop and eat.

So, we subtract 2 hours from the total time it takes to complete the trip:
Total time = Time for the first part + Time for the second part

The total distance of the trip is 210 miles, and the average speed for the trip is 60 miles per hour.
Time for the first part = Distance / Speed
= 2 hours

Time for the second part = Total time - Time for the first part
= Total time - 2 hours

To find the total time, we divide the total distance by the average speed.
Total time = Distance / Speed
= 210 miles / 60 miles per hour
= 3.5 hours

Therefore, the time for the second part of the trip is:
Time for the second part = Total time - Time for the first part
= 3.5 hours - 2 hours
= 1.5 hours

So, the second part of the trip will take 1.5 hours.

To find out how long the second part of the trip will take, we first need to calculate the time it takes to drive the first part of the trip.

The speed of Herman's dad's car is given as 60 miles per hour. They plan to stop and eat after 2 hours of driving. So, for the first part of the trip, they will cover a distance of 60 miles per hour * 2 hours = 120 miles.

To find out the remaining distance they need to travel, we subtract the distance covered in the first part from the total distance: 210 miles - 120 miles = 90 miles.

Now, we can calculate the time it would take to cover the remaining distance.

The speed is still 60 miles per hour, and we know the distance is 90 miles. We can use the formula time = distance/speed to calculate the time.

Time = 90 miles / 60 miles per hour = 1.5 hours.

Therefore, the second part of the trip will take 1.5 hours.