physical science

posted by .

a cyclist pedals at a constant velocity of 15m.s-1 on a level road. the power delivered by the cyclist is 240W. what is the magnitude of the frictional foce acting against the motion?

  • physical science -

    P=Fv(240รท15)= 16N

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Physics

    A motor cyclist traveling at 30 m/s accelerates uniformly for 5 seconds to v= 40 m/s. H then maintains a constant velocity for the next 4 minutes. How far did the motor cyclist travel throughout the entire motion?
  2. Physics

    A cyclist intends to cycle up a 7.5 degree hill whose vertical height is 170 m. Assuming the mass of bicycle plus cyclist is 95 kg, calculate how much work must be done against gravity. If each complete revolution of the pedals moves …
  3. applied physics

    A cyclist and her bicycle have a combined mass75.okg. If the frictional force acting against the of the bicycle is -23.5, what force must the cyclist apply to maintain a constant velocity?
  4. physics

    A cyclist is riding in the positive horizontal direction at 14.8 m/s on a horizontal level surface. He encounters an air resistance force of 50 N. The actions on the pedals by the cyclist cause a backward force of 73 N to be exerted …
  5. Physics

    A cyclist and her bicycle have a combined mass of 75.0kg. If the frictional force acting against the motion of the bicycle is -23.5N, what force must the cyclist apply to maintain a constant velocity?
  6. math

    a cyclist bikes at a speed of 6 m/s after rolling down a hill in 3 s. Of the cyclist has a constant acceleration of 2 m/s during the descent, what was the velocity of the cyclist at the top of the hill?
  7. physics

    Assume a cyclist of weight mg can exert a force on the pedals equal to 0.90 mg on the average. If the pedals rotate in a circle of radius 18 cm, the wheels have a radius of 34 cm, and the front and back sprockets on which the chain …
  8. Science

    A cyclist of total mass 85 kg maintains a constant speed up an inclined plane. the plane is inclined at 20 degrees to the horizontal. with frictional force of 120 N. the cyclist covers a distance of 50 m along the inclined plane in …
  9. biomechanics

    A cyclist is coasting up a hill. At t=0, the cyclist has a velocity of 14.27 m/s. If the acceleration of the cyclist is constant at -1.67 m/s2, how long will it take the cyclist to come to a complete stop?
  10. Physics

    A cyclist whose mass is 48 kg turns a corner with a radius of 30 m at a speed of 25 m/s. A) What is the magnitude of the cyclist's acceleration?

More Similar Questions