The ball flies at a speed of 15 m / s the mass of the ball is 0.5 kg which equals the kinetic energy of the ball
| February 8, 2021 | education
mm = 0.5 kg.
Vm = 15 m / s.
Ek -?
The kinetic energy of a ball Ek with a mass of mm, which flies at a speed of Vm, is called a scalar physical quantity, which is determined by the formula: Ek = mm * Vm ^ 2/2.
Ek = 0.5 kg * (15 m / s) ^ 2/2 = 56.25 kg * m2 / s2 = 56.25 J.
This means that the flying ball is capable of performing mechanical work at A = 56.25 J.
Answer: the kinetic energy of the ball is Ek = 56.25 J.
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