Ask questions and get helpful answers.
Ask a New Question
  1. Questions
  2. physics

If there is just one force acting on an object, does its work necessarily result in an increase in kinetic energy? Explain. (Select all that apply.)

1.Yes, when a force does work on an object it always results in an increase in kinetic energy.
2.The work done by the force on the object might result in an increase in kinetic energy.
3.No, if the force is at right angles to a body moving in a circular path, this centripetal force does no work and cannot change the kinetic energy.
4.No, if there is a force component along the line of motion, the force could act opposite to the motion and cause a decrease in kinetic energy.

  1. 👍
  2. 👎
  3. 👁
  4. ℹ️
  5. 🚩
wassuh
3 answers

  1. 3 and 4 are true. 1. is false

    2.says "might result in an increase" which is a true statement, but they asked if it necessarly causes an increase, which it does not.

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
    drwls

  2. i will rain so many bullets upon you to which is a blessing and a curse youll be immortal but you will be reborn as a bullet golem

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
    bullet laser

  3. I hate physics and wish to not have to deal with bad professors.

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
    David

Answer this Question

Related Questions

  1. Science

    𝟙.) Which term describes how far an object has traveled from its original location? 🅰🅽🆂🆆🅴🆁: displacement 𝟚.) What would the position-time graph look like for an object that remains still over time? 🅰🅽🆂🆆🅴🆁: a

  2. Physics-please check my work

    Can you check my work please? true/false 1.) force is a scalar quantity: *FALSE 2.) the object on which a force acts is called the system: *TRUE 3.)The specific, indentifiable cause of a force is called the system: *FALSE 4.) A force can not exist without

  3. physics

    it takes 100 N to pull and object up an inclined plane. the gravitional force on the object is 600 N what is the load force in this case? what is the effort force in this case? what is the mechanical advantage?

  4. General Physics I

    A 50-N force acts on a 2-kg crate that starts from rest. When the force has been acting for 2 s the rate at which it is doing work is: I found this question online so I saw the answer is 2500 Watts. What I don't understand is how to come to this

  5. Physics-check answer please (multiple choice)

    1. A 2.5 kg mass at rest on a horizontal surface is acted upon by an applied horizontal force of 150 N. A frictional force of 100 N acts on the mass. How much work is done on the mass? my answer: would the work be 0? 2. When a rock is thrown straight up in

  6. physics

    a force of 200 N is exerted at an angle 30 degrees with respect to the horizontal on an object whose mass is 30kg. the coefficient of friction between the object and the surface is the 0.2.(a)what is the frictional force?(B) what is the acceleration of the

  7. Calculus AP Exam review explanation pls

    1) The average value of the function g(x) = 3^cos x on the closed interval [ − pi , 0 ] is: 2)The change in the momentum of an object (Δ p) is given by the force, F, acting on the object multiplied by the time interval that the force was acting: Δ p =

  8. physics

    A 5.0 kg book is sitting on a table. Which describes the force acting on the book a. there are no forces acting on the book b. the force of the table upward is greater than the force of gravity downward c. the net force on the book is zero d. kinetic

  9. Physic (concepts-please check my thoughts)

    A net torque applied to a rigid object always tends to produce? a)translational acceleration b) rotational equilibrium c) rotational acceleration d) rotational inertia e) none of these work (c) Torque produces torsion and tends to produce rotation. The net

  10. Physics -- check answers

    1. In moving an object of mass 10 kg through a distance of 8.0 m, 40 J of work is done. The average force exerted is? my answer: 320N 2. What is the kinetic energy of a 20 kg object moving at a speed of 10 m/s? my answer: 1000J 3. the gravitational

Still need help?

You can ask a new question or browse existing questions.