A Honda Civic Hybrid weighs about 2850lb .Calcculate the weight of the car in newtons. (Note: 0.22 lb =1N ).Calculate the mass of the car in kilograms. (Note: 1 kg on Earth's surface has a weight of 10 N ).

Respuesta :

To solve this problem we will apply Newton's second law for which weight is defined as the product between mass and acceleration of gravity. That is to say

[tex]F_W = mg\rightarrow m = \frac{W}{g}[/tex]

Here,

m = mass

g = Gravitational acceleration

If we have that 0.22lb is equal to 1N, then the weight will be

[tex]F_W = 2850lb \frac{1N}{0.22lb}[/tex]

[tex]F_W = 12954N[/tex]

Gravitational force is equal to [tex]9.8m/s^2[/tex], then

[tex]m =\frac{12954}{9.8}[/tex]

[tex]m =1320.5kg[/tex]

Therefore the mass of the car is 1320.5Kg