Two cars pass a school when a stopwatch reads zero. They both travel in the same direction. Car A travels at a constant speed of 98 km/h and Car B travels at 64 km/h. How many meters apart are the two cars when the stopwatch reads 2.0 hours?
distance = rate * time
calculate the two distances
98 * 2 =
64 * 2 =
------------then subtract
since it says meters, not kilometers, multiply answer by 1,000
To find the distance between the two cars when the stopwatch reads 2.0 hours, we first need to find the distance each car has traveled after 2.0 hours.
Let's start with car A. We know that car A travels at a constant speed of 98 km/h. Therefore, the distance traveled by car A after 2.0 hours can be calculated using the formula:
Distance = Speed × Time
Distance_A = 98 km/h × 2.0 hours
Distance_A = 196 km
Now, let's move on to car B. We know that car B travels at a constant speed of 64 km/h. Therefore, the distance traveled by car B after 2.0 hours can be calculated using the same formula:
Distance_B = 64 km/h × 2.0 hours
Distance_B = 128 km
So, car A has traveled 196 km and car B has traveled 128 km after 2.0 hours.
To find the distance between the two cars, we subtract the distance traveled by car B from the distance traveled by car A:
Distance_between_cars = Distance_A - Distance_B
Distance_between_cars = 196 km - 128 km
Distance_between_cars = 68 km
Finally, we need to convert this distance from kilometers to meters. Since 1 kilometer is equal to 1000 meters:
Distance_between_cars = 68 km × 1000 m/km
Distance_between_cars = 68,000 meters
Therefore, when the stopwatch reads 2.0 hours, the two cars are 68,000 meters apart.