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melomori [17]
2 years ago
8

Two cities are 3450 miles apart. A plane leaves one of​ them, traveling towards the other at an average speed of 310 miles per h

our. At the same time a plane leaves the​ other, traveling towards the​ first, at an average speed of 380 miles per hour. How long will it take them to​ meet?
Mathematics
1 answer:
Amiraneli [1.4K]2 years ago
8 0

Answer:

5 hours.

Step-by-step explanation:

let they meet after t hours.

310t+380t=3450

690t=3450

69t=345

t=345/69=5

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Step-by-step explanation:

Given that,

Radius of circle, r = 38 cm = 0.38 m

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\theta_i=10^{\circ}=0.174\ rad

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Let \omega is the angular velocity of the particle such that, \omega=\dfrac{\omega_f-\omega_i}{t}

\omega=\dfrac{1.74-0.174}{11}

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We need to find the instantaneous velocity of the particle. The relation between the angular velocity and the linear velocity is given by :

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3 years ago
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dsp73

Answer:

2/3-4

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