What is the effect of slope on velocity?

[denzel]

Homework Statement

You are sliding downhill a slope of 10% (what angle is that?). Calculate how the starting velocity of 10 km/h changes within the first 120 s. After that you try to climb up an icy hill with 5% slope. Is that possible?

Homework Equations

Vf = Vi +At

The Attempt at a Solution

I tried to put acceleration as -9.81 and using the kinematic formula Vf = Vi +At but the result was way too big. Should I take those 5.71 degrees and do something with them?

 

[Arman777]

Like %100 slope is 90 degree %0 slope is 0 degree so %10 is ??

Try to calculate the acceleration that you ll gain in inclined plane

 

[denzel]

Like %100 slope is 90 degree %0 slope is 0 degree so %10 is ??

Try to calculate the acceleration that you ll gain in inclined plane

How should I do this I if Ii don't have the mass?

 

[Arman777]

How should I do this I if Ii don't have the mass?

You don't need mass If you write down the equations you'll see

 

[Arman777]

Try To write down the total force acting on the object.Then you fill find a

 

[denzel]

You don't need mass If u write down the equations you ll see

Well I really don't know which eccuations are you talking about.

 

[Arman777]

Well I really don't know which eccuations are you talking about.

Do you know Newton's Law and their applications ?

 

[lewando]

Like %100 slope is 90 degree %0 slope is 0 degree so %10 is ??

Actually 45 degrees corresponds to 100% slope.

A reference: http://www.engineeringtoolbox.com/slope-degrees-gradient-grade-d_1562.html