physics

work is being done when a force:

a) is exerted while pulling a wagon up a hill
b) acts vertically on a cart that can only move horizontally
c) is exerted by one team in a tug-of-war when there is no movement
d) of gravitational attraction acts on a person standing on the surface of the Earth

  1. 👍 0
  2. 👎 0
  3. 👁 828
  1. work = force*distance * cosine of the angle between force and distance.

    1. 👍 0
    2. 👎 0
    👨‍🏫
    bobpursley
  2. tell me

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. Science

    Ms. Sue please help. 8. Which would best reduce the amount of energy needed to pull a wagon up a ramp? (1 point) increasing the slope of the ramp reducing the friction between the wagon wheels reducing the length of the wagon

  2. Physics

    You pull on a wagon resting on the sidewalk. What will happen next? The wagon moves because you apply more force to the wagon than it applies to you. The wagon doesn’t move because the force you apply to the wagon is equal to

  3. Physics

    A ball is sitting in a child's wagon and a child is holding the wagon's handle. The ball then rolls to the back of the wagon without anyone touching the ball directly. Which of the following statements according to Newton's first

  4. Science (please check my answers)

    7. During the process of photosynthesis, plants convert carbon dioxide and water into glucose. Covalent bonds hold the glucose molecules together. The breaking of the covalent bonds during digestion releases energy. The type of

  1. Physics

    Three huskies are pulling a dog sled. The mass of the driver, sled and supplies is 145 kg. Snowy is pulling with a force of 83 N and 15.5degrees to the left of forward. Buster is pulling with a force of 75 N at 9degrees right of

  2. calculus

    a toy wagon is pulled by exerting a force of 15 pounds on a handle that makes a 30 degree angle with the horizontal. find the work done in pulling the wagon 50 feet.

  3. 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? Assume frictional forces are negligible.

  4. Physics

    Some students want to calculate the work done by friction as an object with unknown mass moves along a straight line on a rough horizontal surface. The students have a force probe, a meterstick, and a stopwatch. Which of the

  1. physics

    a child causes a wagon to accelerate by pulling it with a horizontal force. newton's third law says that the wagon exerts an equal and opposite force on the child. how can the wagon accelerate? (hint: draw a free-body diagram for

  2. physics

    a boy is pulling on a wagon with a force of 70 N directed at an angle of 30 degrees to the horizontal. What force is the wagon being pulled horizontally?

  3. 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

  4. physics

    A boy pulls a wagon with a force of 20N on a handle of .50 meters long. The end he holds is .25 meters higher than the end attached to the wagon. What is the magnitude of the horizontal component that acts to pull the wagon

You can view more similar questions or ask a new question.