Question

Какова кинеьическая энергия тепловоза массой 60 тон при скорости 3,6 км/ч.

Answer 1

E=(m*V^2)/2
m=60т=60000кг
Е=(60000*3,6*3,6)/2=388800Дж=388,8кДж
Ответ:388,8кДж

Answer 2

Calculating Kinetic Energy of a Train

To calculate the kinetic energy of a train, we can use the formula for kinetic energy:

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

Given: - Mass of the train (m) = 60 tons = 60,000 kg (1 ton = 1000 kg) - Velocity (v) = 3.6 km/h

Conversion of Velocity to m/s

First, we need to convert the velocity from km/h to m/s: - 1 km/h = 0.277778 m/s - Velocity (v) = 3.6 km/h = 3.6 * 0.277778 m/s = 1 m/s

Calculating Kinetic Energy

Now, we can calculate the kinetic energy using the given mass and velocity: - Kinetic Energy (KE) = 0.5 * 60,000 kg * (1 m/s)^2 - Kinetic Energy (KE) = 0.5 * 60,000 kg * 1 m^2/s^2 - Kinetic Energy (KE) = 30,000 Joules

Therefore, the kinetic energy of the train with a mass of 60 tons and a velocity of 3.6 km/h is 30,000 Joules.