Physics

A 1.2 kg object is moving with a speed of 8.0 m/s collides perpendicularly with a wall and emerges with a speed of 6.0m/s in the opposite direction perpendicular to the wall. If the object is in contact with the wall for 2.0m/s. What is the magnitude of the average force on the object by the wall?

  1. 👍
  2. 👎
  3. 👁
  1. 8.4Kn

    1. 👍
    2. 👎
  2. Could you please explain how you got to your answer?

    1. 👍
    2. 👎
  3. F=Δp/Δt=mΔv/Δt=
    =m[v₂-(-v₁)]/Δt=
    =m(v₂+v₁)/Δt=
    =1.2•(6+2)/ Δt=…
    Check the given data (time of contact!!!!)and substitute it

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. physics

    An object of mass m is hanging by a string from the roof of an elevator. We want to compare the tension in the string due to the weight of the object under various conditions. Which statements are true? Choices: True, False. A. If

  2. Physics

    A car mass 600kg moving a speed 20m/s.it collides with a stationary car mass 900kg.if the first car bounce back 4m/s.what speed does the second object after collision

  3. Physics

    An 800kg car moving at 80kmh^-1 collides with a 1200kg car moving at 40kmh^-1 in the same direction. If the car sticks together, calculate their common speed

  4. Physics

    A car of mass m moving at a speed v1 collides and couples with the back of a truck of mass 3m moving initially in the same direction as the car at a lower speed v2. (Use any variable or symbol stated above as necessary.) (b) What

  1. physic

    1) A 2 . 3 kg object moving at 7.3 m/s collides inelastically with a 4.0 kg object which is initially at rest. What percentage of the initial kinetic energy of the system is lost during the collision?

  2. physics

    A 0.060 kg tennis ball, moving with a speed 2.50 m/s, collides head on with a 0.090kg ball initially moving away from it at a speed of 1.15 m/s. Assuming a perfectly elastic collision, what are the speed and direction of each ball

  3. physics

    A body of mass 5kg moving with a speed of 3m/s collides head on with a body of mass 3kg moving in the opposite direction at speed of 2m/s The first body stops after the collision The final velocity of the second body is Ans:3m/s

  4. Physics

    An object moving along a horizontal track collides with and compresses a light spring (which obeys Hooke's Law) located at the end of the track. The spring constant is 38.6 N/m, the mass of the object 0.270 kg and the speed of the

  1. physics

    1) Find the final velocity of the two balls if the ball with velocity v2i = −21.0 cm/s has a mass equal to half that of the ball with initial velocity v1i = +26.7 cm/s. (Indicate the direction with the sign of your answer.)

  2. Physics

    A 2.87 kg object initially moving in the positive x-direction with a velocity of +4.87 m/s collides with and sticks to a 1.96 kg object initially moving in the negative y-direction with a velocity of -2.55 m/s. Find the final

  3. Physics

    Two objects with masses represented by m1 and m2 are moving such that their combined total momentum has a magnitude of 16.3 kg · m/s and points in a direction 71.5° above the positive x-axis. Object m1 is moving in the x

  4. physics (work/nonconservative forces)

    An object moving along a horizontal track collides with and compresses a light spring (which obeys Hooke's Law) located at the end of the track. The spring constant is 47.3 N/m, the mass of the object 0.230 kg and the speed of the

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