An 800 kg car is rolling down a hill at an angle of 6° relative to horizontal. The total resistive force (drag+friction) is equal to (100 N + (1.2 Ns^2/m^2 × v^2)). Find the terminal speed of the car.

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Ответ:

justsuz72p71a21

18.04.2021

Physics

346.70015 m/s

Explanation:

In the x axis speed is

$v_x=149\ m/s$

In the y axis

$v_y=\sqrt{2gh}\\\Rightarrow v_y=\sqrt{2\times 9.8\times 5000}$

The resultant velocity is given by

$v=\sqrt{v_x^2+v_y^2}\\\Rightarrow v=\sqrt{149^2+2\times 9.8\times 5000}\\\Rightarrow v=346.70015\ m/s$

The magnitude of the overall velocity of the hamper at the instant it strikes the surface of the ocean is 346.70015 m/s

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