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Ferrari energy physics

  • #1

Homework Statement


If there is no friction, how much energy is needed to acccelerate a 1500kg ferrrari from 14km/h to 25km/h


Homework Equations



P=(F)(Vav)

The Attempt at a Solution


14km/h+25km/h / 2 = 19.5km/h

F=(g)(m)
F=9.8*1500
14700N
 

Answers and Replies

  • #2
Hootenanny
Staff Emeritus
Science Advisor
Gold Member
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6
Let's start from the top. Does the question say uniformally accelerated?
 
  • #3
NO it doesnt mention that
 
  • #4
tiny-tim
Science Advisor
Homework Helper
25,832
249
Hi jeahomgrajan! :smile:
If there is no friction, how much energy is needed to acccelerate a 1500kg ferrrari from 14km/h to 25km/h
In other words:

What is the energy at 14km/h?
What is it at 25km/h?
What is the difference? :smile:
 
  • #5
thanks
 
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