Net force is required to bring the truck to a stop

[soulja101]

Homework Statement

A 1.2*10power of 4 kg truck is traveling South as 22m/s
A)what net force is required to bring the truck to a stop in 330m
B)what is the cause of this net force

Homework Equations

Fnet=ma

The Attempt at a Solution

m=1.2*10power of 4 kg
Fnet=ma
= 1.2*10power of 4 kg

Thats as far as i got

 

[cristo]

Homework Statement

A 1.2*10power of 4 kg truck is traveling South as 22m/s
A)what net force is required to bring the truck to a stop in 330m
B)what is the cause of this net force

Homework Equations

Fnet=ma

The Attempt at a Solution

m=1.2*10power of 4 kg
Fnet=ma
= 1.2*10⁴*a

Thats as far as i got

Hint: try considering work and energy.

 

[Ja4Coltrane]

you know the trucks initial energy, right? What concept refers to change in energy?