Post a New Question

Physics

posted by .

Starting from rest Maria pulls horizontally on her new wagon for 1.1 seconds. She exerts a constant force of 89N against a frictional force of 43N. The wagon's final velocity is 3.2m/s. If she is on a level ground, how much does the wagon weigh?

  • Physics -

    Fnet= m a= m *3.2/1.1
    89-43=m * 3.2/1.1 solve for m
    weight= mg

  • Physics -

    Use the fact that impulse
    = (net force)*(time) = (momentum change)

    The momentum given to the wagon is
    (89 - 43)* 1.1 = 50.5 kg m/s

    Divide that by the final velocity to get the mass in kg.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. physics

    a girl pulls a wagon along a level path for a distance of 15.0 m. the handle of the wagon makes an angle of 20.0 degrees with the horizontal, the girl exerts a force of 35.0 N on the handle. Friction provides a force of 24.0 N. Find …
  2. physics

    A child pulls on a wagon handle at an angle 37° above the horizontal with a force of 45 N. If the wagon accelerates at 8.1 m/s2 horizontally, what is the mass of the wagon?
  3. Physics

    A horse pulls upon a wagon, but according to Newton’s third law the wagon pulls back with an equal and opposite force upon the horse. How then can either the wagon or the horse move?
  4. physics

    A tractor pulls a loaded wagon with a constant force of 300 N. If the total mass of the wagon and its contents is 275 kg, (a) what is the wagon's acceleration?
  5. Physics

    A 20 kg wagon is pulled along the level ground by a rope inclined at 30 deg above horizontal. A frictional force of 30 N opposes the motion, how large is the pulling force if the wagon is moving at constant velocity?
  6. Physics

    A 20 kg wagon is pulled along the level ground by a rope inclined at 30 deg above horizontal. A frictional force of 30 N opposes the motion, how large is the pulling force if the wagon is moving at constant velocity?
  7. PHYSICS

    A 20 kg wagon is pulled along the level ground by a rope inclined at 30 deg above horizontal. A frictional force of 30 N opposes the motion, how large is the pulling force if the wagon is moving at constant velocity.
  8. physics

    A child pulls a wagon by the handle along a flat sidewalk. She exerts a force of 80.0 N at an angle of 30.0 above the horizontal while she moves the wagon 12 m forward. The force of friction on the wagon is 34 N. Calculate the mechanical …
  9. samoana high school

    phoebe physics pulls a wagon with a force of 80 N. a) what is the net force of friction between the wagon and the ground is 12 N. b) if she uses 80 N to pull the wagon through a med puddle, and the net force on the wagon is 38 N, what …
  10. Physics

    You are pulling handle of a wagon with a force of 270N. The handle makes an upward 35 degrees angle with the ground. The loaded wagon has a mass of 95kg. 1.what is the weight of the wagon?

More Similar Questions

Post a New Question