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If a race car is traveling South due to a 30N force and the parachute deploys resulting in a 10N force North what is the Net Force (or Resultant Force)?

a) 40n east
b) 40n south
c) 10n west
d) 20n south

Respuesta :

Answer:

F = 20 N south  

Explanation:

It is given that,

Force applied on the racing car in south direction is 30 N and parachute deploys resulting in a 10 N force due North.

We need to find the net force on the car.

Let North denotes +y axis and South denotes -y axis.

So, F₁ = +10 N

F₂ = -30 N

Net force is :

[tex]F=F_1+F_2\\\\F=10+(-30)\\\\F=-20\ N[/tex]

It means that the net force is 20 N and it is acting in south. Hence (d) is correct.    

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