Question

Мячик приобрёл скорость 5м/с масса 150г, а высота, скотрой он упал 500см а) вычислите потенциальную энергию, которой обладает мячик?б) определите кинетическую энергию мячика

Answer 1

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Answer 2

Calculation of Potential Energy:

To calculate the potential energy of the ball, we can use the formula:

Potential Energy (PE) = mass (m) * acceleration due to gravity (g) * height (h)

Given: - Mass of the ball (m) = 150 grams = 0.15 kg - Height (h) = 500 cm = 5 meters (since 1 meter = 100 cm) - Acceleration due to gravity (g) = 9.8 m/s^2 (approximate value on Earth)

Using the formula, we can calculate the potential energy:

PE = 0.15 kg * 9.8 m/s^2 * 5 m

Calculating this, we find that the potential energy of the ball is approximately 7.35 Joules.

Calculation of Kinetic Energy:

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

Kinetic Energy (KE) = 0.5 * mass (m) * velocity^2

Given: - Mass of the ball (m) = 150 grams = 0.15 kg - Velocity (v) = 5 m/s

Using the formula, we can calculate the kinetic energy:

KE = 0.5 * 0.15 kg * (5 m/s)^2

Calculating this, we find that the kinetic energy of the ball is approximately 1.875 Joules.

Therefore, the potential energy of the ball is approximately 7.35 Joules, and the kinetic energy of the ball is approximately 1.875 Joules.