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Computing veloctiy

  • Thread starter smithers11
  • Start date
  • #1

Homework Statement


"A hot-wheels car of mass 0.0250 kg is traveling on a horizontal track with a velocity of 5.00m/s. If the track suddenly turns upward, how high up the track can the car travel?"


Homework Equations


work = mgh = force * distance
PEf + KEf = PEi + KEi
KE = .5mv^2

The Attempt at a Solution



I know that I need to find the distance, so I solve the work equation so it looks like (mgh)/force = distance. However, this is where I'm stuck. What would I use for the height of the ramp? Also, what would I use for the acceleration (I currently have F = ma in the equation, so the masses cancel and what's left is (gh)/a)? Would I use gravity?
 

Answers and Replies

  • #2
LowlyPion
Homework Helper
3,090
4

Homework Statement


"A hot-wheels car of mass 0.0250 kg is traveling on a horizontal track with a velocity of 5.00m/s. If the track suddenly turns upward, how high up the track can the car travel?"


Homework Equations


work = mgh = force * distance
PEf + KEf = PEi + KEi
KE = .5mv^2

The Attempt at a Solution



I know that I need to find the distance, so I solve the work equation so it looks like (mgh)/force = distance. However, this is where I'm stuck. What would I use for the height of the ramp? Also, what would I use for the acceleration (I currently have F = ma in the equation, so the masses cancel and what's left is (gh)/a)? Would I use gravity?
I would suggest that you focus on the conversion of Kinetic energy to gravitational potential energy.
 
  • #3
Ahhh, i got it now. Thanks LowlyPion
 

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