Question

Шар массой 10 кг движется со скоростью 10м/с. Чему равен импульс шара и его кинетическая энергия?

Answer 1

Кинетическая энергия равна Е=mv^2/2=500 Дж. Импульс равен p=mv=100 кг*м/с^2

Answer 2

Impulse of the Sphere:

The impulse of the sphere can be calculated using the formula: impulse = mass x change in velocity. Given: - Mass (m) = 10 kg - Initial velocity (u) = 10 m/s - Final velocity (v) = 0 m/s (assuming the sphere comes to a stop)

Using the formula, the impulse of the sphere can be calculated as: impulse = mass x (final velocity - initial velocity)

Substituting the values: impulse = 10 kg x (0 m/s - 10 m/s) impulse = 10 kg x (-10 m/s) impulse = -100 kg m/s.

Kinetic Energy of the Sphere:

The kinetic energy of the sphere can be calculated using the formula: kinetic energy = 0.5 x mass x (velocity)^2. Given: - Mass (m) = 10 kg - Velocity (v) = 10 m/s

Using the formula, the kinetic energy of the sphere can be calculated as: kinetic energy = 0.5 x 10 kg x (10 m/s)^2 kinetic energy = 0.5 x 10 kg x 100 m^2/s^2 kinetic energy = 500 J.

Therefore, the impulse of the sphere is -100 kg m/s and its kinetic energy is 500 J.