Solving for Normal Force in a 1k kg Car on a Dip

[briiannnaa04]

Homework Statement

a 1,000 kg car coasts into a slight dip in the road. The radius of the dip is 200-m. At the bottom of the dip the speed of the car is 10 m/s.
what is the magnitude and dirrection of the normal force?

Homework Equations

Sum of f=ma to find acceleration.

The Attempt at a Solution

the acceleration would be .5 m/s/s so wouldn't it just be .5*1000
the answer says it should be 10300 though.

 

[rock.freak667]

there is the normal force acting as well as weight. The resultant of these two provide the centripetal force, mv²/r

 

[briiannnaa04]

so what steps do i take first?

 

[rock.freak667]

so what steps do i take first?

Write down the resultant force in terms of the normal reaction and the weight