• Congratulations to the Class of 2024 on your results!
    Let us know how you went here
    Got a question about your uni preferences? Ask us here

Physics: Air resistance Question (1 Viewer)

sdd10

New Member
Joined
Oct 1, 2008
Messages
7
Gender
Undisclosed
HSC
N/A
I'm stuck with this air resistance question for physics (moving about)

A car travels along a staright road with a constant speed of 60 km/h. If the driving force is a constant 1800 N and the road friction is 300 N, what is the force of the air resistance?

How would you work out air resistance? Would it be 1500 N because the car isn't accelearting - so net force is equal to 0?
 
K

khorne

Guest
Imo, yes I think that would be correct, as F= m * a, and a = 0 therefore f = m* 0 = 0

Therefore sum of all forces = 0
 

iSplicer

Well-Known Member
Joined
Jun 11, 2008
Messages
1,809
Location
Strathfield
Gender
Male
HSC
2010
Uni Grad
2017
I'm stuck with this air resistance question for physics (moving about)

A car travels along a staright road with a constant speed of 60 km/h. If the driving force is a constant 1800 N and the road friction is 300 N, what is the force of the air resistance?

How would you work out air resistance? Would it be 1500 N because the car isn't accelearting - so net force is equal to 0?
Yep, thats right. Constant velocity means net force = zero, in which case you would need 1500N of air res.
 

Users Who Are Viewing This Thread (Users: 0, Guests: 1)

Top