A hunter weighing m = 70 kg is in a boat weighing P = 1300N. The hunter shoots from the gun in the horizontal

| February 27, 2021 | education

A hunter weighing m = 70 kg is in a boat weighing P = 1300N. The hunter shoots from the gun in the horizontal direction, as a result of which the boat acquires a speed of v = 4 cm / s. The mass of a bullet emitted from a hunter’s gun when fired at a speed of vp = 800m / s.

Let’s write down the formula by which we calculate the total weight:
P3 = P1 + P2;
Substitute in the formula and solve:
P3 = 700 + 1300;
P3 = 2000 (H);
Let’s write down the formula for finding the total mass:
m = P / g;
Substitute in the formula:
m = 2000 N / 10 m / 2;
m = 200 (kg);
Let’s write down the formula for finding the resulting speed:
V3 = V2 – V1;
V3 = 800 – 4;
V3 = 794 (m / s);
Let’s write the formula for kinetic energy:
Eк = m * V ^ 2/2;
Let’s substitute:
Ek = 200 * 794 ^ 2/2;
Ek = 63.043
Answer: 63.043.



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