Question

На соревнованиях по техническому моделированию с одной и той же точки прямолинейной трассы одновременно стартовали в одном направлении две машинки. Скорость первой машинки_ 72 км/ч, а второй_63км/ч. На какое расстояние через 5 с после старта вторая машинка от станет то первой?

Answer 1

1)на 72 км/ч-63 км/ч=9 км/ч едет быстрее первая машинка=9000:3600=2,5 м/сек 2)на 2,5х5=12,5 метров после старта вторая машинка отстанет от первой

Answer 2

Calculating the Distance Between Two Cars in Technical Modeling Competition

In a technical modeling competition, two cars started simultaneously from the same point on a straight track in the same direction. The speed of the first car is 72 km/h, and the speed of the second car is 63 km/h. We need to calculate the distance the second car will be from the first car after 5 seconds from the start.

To calculate the distance between the two cars after 5 seconds, we can use the formula:

Distance = Speed × Time

Calculations

Using the given speeds and the time of 5 seconds, we can calculate the distances traveled by each car:

For the first car: - Speed of the first car = 72 km/h - Time = 5 seconds (which we'll convert to hours for consistency) - Distance traveled by the first car = 72 km/h × (5/3600) h = 0.1 km

For the second car: - Speed of the second car = 63 km/h - Time = 5 seconds (which we'll convert to hours for consistency) - Distance traveled by the second car = 63 km/h × (5/3600) h = 0.0875 km

Conclusion

After 5 seconds from the start, the second car will be approximately 0.1 km - 0.0875 km = 0.0125 km (or 12.5 meters) behind the first car.