Question

Автомобиль движется с постоянной скоростью 80км/ч. Сколько километров он преодолеет за 120 мин? За 30 мин? За 15 мин? Сможет ли этот автомобиль преодолеть 20 м за 1 с? С какой наименьшей скоростью должен двигаться данный автомобиль. Чтобы выполнить указанное требование? ПОМОГИТЕ, СРОЧНО!!!

Answer 1

80 км/ч = 80/60 = 1 1/3 км/мин

За 120 мин: 120 * 1 1/3 = 160 км

За 15 мин : 15 * 1 1/3 = 20 км

За 30 мин: 30 * 1 1/3 = 40 км

1 1/3 км/мин = 1 1/3 * 1000/60 = 22,22 м/с сможет

20 м/с = 20*3600/1000 = 72 км/ч

Answer 2

Calculation of Distance Traveled

To calculate the distance traveled by a car moving at a constant speed of 80 km/h, we can use the formula distance = speed × time. Let's calculate the distances for the given time intervals:

1. For 120 minutes (2 hours): - Convert 120 minutes to hours: 120 minutes ÷ 60 minutes/hour = 2 hours. - Distance = speed × time = 80 km/h × 2 hours = 160 kilometers.

2. For 30 minutes (0.5 hours): - Distance = speed × time = 80 km/h × 0.5 hours = 40 kilometers.

3. For 15 minutes (0.25 hours): - Distance = speed × time = 80 km/h × 0.25 hours = 20 kilometers.

Can the Car Travel 20 Meters in 1 Second?

To determine if the car can travel 20 meters in 1 second, we need to convert the units to match the speed given in km/h.

1 meter is equal to 0.001 kilometers, and 1 second is equal to 1/3600 hours.

- Distance = speed × time = 80 km/h × (20 meters × 0.001 km/meter) ÷ (1 second × 1/3600 hours/second) = 80 km/h × 0.02 km ÷ (1/3600) = 80 km/h × 0.02 km × 3600 = 80 km/h × 0.72 km = 57.6 kilometers.

Since the calculated distance is less than the distance the car can travel in 1 second, the car can indeed travel 20 meters in 1 second.

Minimum Speed Required to Meet a Specific Distance Requirement

To determine the minimum speed required for the car to meet a specific distance requirement, we can rearrange the formula distance = speed × time to solve for speed.

Let's say the car needs to travel a distance of 100 kilometers in 2 hours.

- Speed = distance ÷ time = 100 kilometers ÷ 2 hours = 50 km/h.

Therefore, the car needs to maintain a minimum speed of 50 km/h to meet the distance requirement of 100 kilometers in 2 hours.

Note: The search results did not provide specific information about the car model or its speed capabilities. The calculations are based on the assumption that the car can maintain a constant speed of 80 km/h.