Body impulse 34 kg * m / s and kinetic energy 48 J, determine body weight?

These tasks: P (momentum of the considered body) = 34 kg * m / s; Ek (kinetic energy) = 48 J.

1) Let us express and calculate the speed of the body under consideration from the equality: Ek = m * V ^ 2/2 = P * V / 2, whence V = 2 * Ek / P = 2 * 48/34 = 2.82 m / s.

2) Determine the body weight:

a) m = P / V = 34 / 2.82 ≈ 12 kg.

b) m = 2 * Ek / V ^ 2 = 2 * 48 / 2.82 ^ 2 ≈ 12 kg.

Answer: The body in question has a mass of 12 kilograms.