Question

Вертолёт скорость которого 315 км ч догоняет аэросани скорость которых 65 км ч через какое время и на каком расстоянии от начала движения вертолёта догонит air аэросани если первоначальное расстояние между ними 1500 км

Answer 1

Ответ:

Через 6 часов на расстояние 1890 км вертолет и аэросани встретятся

Пошаговое объяснение:

S=V*t     t=S:V     V=S:t

1) 315-65=250 км/ч - V вдогонку

2) 1500:250=6 часов - t

3) 315*6=1890 км - S

Answer 2

Ответ:

Пошаговое объяснение:

S=v×t, v=S:t t=S:v

315-65=250км/час скорость сближения

1500÷250=6 часов через 6 часов вертолёт догонит аэросани

315×6=1890км пролетит до момента встречи

Answer 3

This is a problem of relative motion. Let us assume that the helicopter and the snowmobile are moving along the same straight line. Let x be the distance traveled by the helicopter from the start of its motion, and y be the distance traveled by the snowmobile from the start of its motion. Then, the equation of motion for the helicopter is:

x = 315t

where t is the time in hours. The equation of motion for the snowmobile is:

y = 65t + 1500

where 1500 is the initial distance between them in kilometers. The helicopter will catch up with the snowmobile when x = y, or:

315t = 65t + 1500

Solving for t, we get:

t = 1500 / 250 = 6

Therefore, the helicopter will catch up with the snowmobile after 6 hours of flight. The distance traveled by the helicopter from the start of its motion is:

x = 315 * 6 = 1890

The distance traveled by the snowmobile from the start of its motion is:

y = 65 * 6 + 1500 = 1890

Hence, the helicopter will catch up with the snowmobile at a distance of 1890 kilometers from the start of the helicopter's motion.