Question

На сколько изменится импульс тела массой 2 тонна при имерении егр скорости от 36 км/ч до 72 км/ч ?

Answer 1

P = m * V
p1 = 2000 * 36 = 72000
p2 = 2000 * 72 = 144000
p2/p1 = 2/1
Ответ: Импульс тела увеличтся в 2 раза (на 72,000)

Answer 2

Calculating Change in Momentum

To calculate the change in momentum of an object, we can use the formula:

Change in momentum = mass × change in velocity

Given: - Mass of the object = 2 tons = 2000 kg (1 ton = 1000 kg) - Initial velocity = 36 km/h - Final velocity = 72 km/h

First, we need to convert the velocities from km/h to m/s, as the standard unit for velocity in the SI system is meters per second (m/s).

1. Converting Velocities to m/s - Initial velocity = 36 km/h - 1 km/h = 0.277778 m/s - Initial velocity = 36 km/h × 0.277778 m/s = 10 m/s - Final velocity = 72 km/h - Final velocity = 72 km/h × 0.277778 m/s = 20 m/s

2. Calculating Change in Momentum - Change in velocity = Final velocity - Initial velocity - Change in velocity = 20 m/s - 10 m/s = 10 m/s - Change in momentum = mass × change in velocity - Change in momentum = 2000 kg × 10 m/s = 20000 kg m/s

Therefore, the change in momentum of the object with a mass of 2 tons, when its velocity changes from 36 km/h to 72 km/h, is 20000 kg m/s.