COLLEGE PHYSICS

posted by .

A car with mass of 1400kg is towed with a net force of 4500N. the car starts from rest, find the speed of the car traveled after it traveled 100m.
W=FnetX distance=ma x distance
4500N=(1/2)1400kg V^2
2.5m/s=V

is this right? if not what am i doing wrong?

  • COLLEGE PHYSICS -

    No.

    Your equations are troubling, as it reveals you have no idea what you are doing.

    Work input= KE output
    Netforce*distance= 1/2 m v^2
    4500*100= 1/2 *1400*v^2
    Solve for v. This is about ten times what you thought.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Math

    A race car starts from rest on a circular track of radius 565 m. The car's speed increases at the constant rate of 0.520 m/s2. At the point where the magnitudes of the centripetal and tangential accelerations are equal, find the following. …
  2. physics

    a car of mass 'm'starts from rest and is driven with constant power.after some time it covers a distance 'x'.what should be the speed of car?
  3. physics

    a car traveled at uniform velocity of 20m/sec for 5 sec the brakes are applied and car retards uniformly and come to rest in further 8 sec.find a)distance traveled in first five sec b)distance traveled after breaks are applied c)total …
  4. Physics

    A race car starts from rest on a circular track of radius 445 m. The car's speed increases at the constant rate of 0.380 m/s2. At the point where the magnitudes of the centripetal and tangential accelerations are equal, find the following. …
  5. Physics

    The speed time graph shows the motion of a car over a period of 40 seconds. a. describe the motion of the car between: 1.) O and A - The car is traveling at constant speed from 0 to 20 m/s. 2.) A and B - The car is at rest for 20 seconds. …
  6. Physics

    The speed time graph shows the motion of a car over a period of 40 seconds. a. describe the motion of the car between: 1.) O and A - The car is traveling at constant speed from 0 to 20 m/s. 2.) A and B - The car is at rest for 20 seconds. …
  7. physics

    a car of mass 2000kg has a driving force of 4500N and experiences an air resistance of 1500N, What is the car's acceleration?
  8. Mathematics C 8th grade

    Two cars traveled equal distances in different amounts of time. Car A traveled the distance in 2.4 h, and Car B traveled the distance in 4 h. Car A traveled 22 mph faster than Car B. How fast did Car A travel?
  9. Physics

    A race car starts from rest on a circular track of radius 279 m. The car's speed increases at the constant rate of 0.760 m/s2. At the point where the magnitudes of the centripetal and tangential accelerations are equal, find the following …
  10. phy211

    A car accelerates from rest at 2.0 m/s2 for 20 s. The speed then remains constant for 20 s, after which the car slows down with an acceleration of 3 m/s2 until the car stops. What is the total distance traveled?

More Similar Questions