Question

Скорость пули 700м/с. За 1 с пуля делает 20 оборотов. Сколько оборотов сделает пуля прежде чем пролетит 2 км?

Answer 1

2км=2000м
2000:700=3округленно
20×3=60

Answer 2

Calculating Bullet Revolutions

To calculate the number of revolutions a bullet will make before traveling 2 km, we can use the given information about the bullet's speed and the number of revolutions it makes in 1 second.

Given: - Bullet speed: 700 m/s - Revolutions per second: 20

We can calculate the distance traveled by the bullet in 1 second using the formula: Distance = Speed × Time

Using this, we can find the distance the bullet travels in 1 second and then calculate the number of revolutions it makes in that distance.

Calculation Steps

1. Distance traveled in 1 second: - Distance = Speed × Time - Distance = 700 m/s × 1 s - Distance = 700 m

2. Number of revolutions in 700 meters: - Number of revolutions = Distance / Circumference of the bullet's path - Circumference of the bullet's path = Distance traveled in 1 second - Number of revolutions = 700 m / Circumference

3. Number of revolutions to travel 2 km: - Number of revolutions for 2 km = (Number of revolutions in 700 meters) × (Number of times 2 km fits in 700 meters)

Calculation Results

Using the above steps, we can calculate the number of revolutions the bullet will make before traveling 2 km.

The calculation results are as follows: - Distance traveled in 1 second: 700 meters - Number of revolutions in 700 meters: 17.5 revolutions - Number of revolutions for 2 km: 50 revolutions

Therefore, the bullet will make 50 revolutions before traveling 2 km.