At 1:00 p.m. a car, traveling at a constant velocity of 98 km/h toward the west, is 19 km to the west of our school.
How far from the school will it be at 3:30
d = 19 + 98 km/h*2.5 h = 264 km.
To find the distance from the school at 3:30 p.m., we need to determine the total time the car has been traveling and then calculate the distance.
First, let's determine the time elapsed from 1:00 p.m. to 3:30 p.m.:
1:00 p.m. to 2:00 p.m. = 1 hour
2:00 p.m. to 3:00 p.m. = 1 hour
3:00 p.m. to 3:30 p.m. = 30 minutes (since half an hour is half of an hour)
So, the total time elapsed is 1 hour + 1 hour + 0.5 hours = 2.5 hours.
Since the car is traveling at a constant velocity of 98 km/h toward the west, we can use the formula: distance = velocity × time.
Distance = 98 km/h × 2.5 hours
Distance = 245 km
Therefore, at 3:30 p.m., the car will be 245 km to the west of the school.