Question

Мяч массой 1 кг катится со скоростью 20 м/с по горизонталь ной поверхности определите его кинетической энергию

Answer 1

$E = \frac{mv^2}{2}$
$E= \frac{1*(20)^2}{2} = \frac{400}{2} = 200$ Дж
 Ответ: 200 Дж.

Answer 2

Calculation of Kinetic Energy

To calculate the kinetic energy of an object, we can use the formula:

Kinetic Energy (KE) = (1/2) * mass * velocity^2

Given that the mass of the ball is 1 kg and it is rolling with a velocity of 20 m/s on a horizontal surface, we can substitute these values into the formula to find the kinetic energy.

KE = (1/2) * 1 kg * (20 m/s)^2

Calculating this expression, we find:

KE = (1/2) * 1 kg * 400 m^2/s^2

Simplifying further, we get:

KE = 200 J

Therefore, the kinetic energy of the ball is 200 Joules.

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