qweasd

a stone thrown at an angle of 30 degrees fell to the ground 3 seconds after the throw. find the speed of the throw, the range of flight, the highest elevation.

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answers: 1

Expert:

VarInt

Speed - v;

Vertical component speed - v * sin(30);

During time t, the speed changed to - v * sin(30);

The change in speed over time t is equal to g * t;

3 * v * sin(30) = g × t;

V = g * t/(3 * sin(30));

T - flight time;

Horizontal velocity component v * cos(30) = g * t * cos(30)/(3 * sin(30));

Flight range L = v * cos(30) * t = g * t * cos(30)/(3 * sin(30)) * t = g * t2/(3 * tg(30)) = 10 * 32/(2 * (1/√3)) = 30√3 m;

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