Question

На сколько изменится ( по модулю) импульс автомобиля массой 1 т при изменении его скорости от 54 км/ч до 72 км/ч?

Answer 1

P=m*v 
1т=1000кг 
54км/ч=15м/ 
72км/ч=20м/с 
p=1000кг*15м/с=15000кг*м/с 
p=1000кг*20м/с=20000кг*м/с 
20000кг*м/с-15000кг*м/с=5000кг*м/с 

Answer 2

Calculation of Change in Momentum

To calculate the change in momentum of a car, we can use the formula:

Change in momentum = mass × change in velocity

Given that the mass of the car is 1 ton (or 1000 kg) and the change in velocity is from 54 km/h to 72 km/h, we can calculate the change in momentum.

First, let's convert the velocities from km/h to m/s:

Initial velocity (v1) = 54 km/h = 15 m/s Final velocity (v2) = 72 km/h = 20 m/s

Now, we can calculate the change in velocity:

Change in velocity (Δv) = v2 - v1 = 20 m/s - 15 m/s = 5 m/s

Next, we can calculate the change in momentum:

Change in momentum (Δp) = mass × change in velocity = 1000 kg × 5 m/s = 5000 kg·m/s

Therefore, the change in momentum of the car, in terms of magnitude, is 5000 kg·m/s.