A horizontal force of 0.80N is required to pull a 5kg bullet across a table top at a constant speed. With the block initially at rest, a 20g bullet fired horizontally into the block causes the block to slide 1.5m before coming to rest again. Determine the speed V of the bullet where the bullet is assumed to be in the block

  1. 👍
  2. 👎
  3. 👁
  1. Answer the question

    1. 👍
    2. 👎
  2. mu m g = .8 N
    mu*5*9.81 = .8 N
    mu = .8 /(5*9.81)
    work done by friction during stop =mu 20 *9.81 * 1.5 meters
    (1/2) (20) v^2 = [ .8 /(5*9.81) ] 20* 9.81 * 1.5
    10 v^2 = [ .8 ] 4 * 1.5

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. physics

    A .22 rifle bullet traveling at 360m/s strikes a block of wood, which penetrates to a depth of .110m. The mass of the bullet is 1.80g. Assume a constant retarding force.A) how much time is required for the bullet to stop? b) what

  2. physics

    A 20kg sled is being pulled across a horizontal surface at a constant velocity. The pulling force has a magnitude of 80N and is directed at a angle of 30.0degrees above the horizontal. Determine the coefficient of kinetic

  3. physics

    A 5kg box on a horizontal table is pushed by a horizontal force of 15N. If the coefficient of friction is 0.4, will the box move? what is the smallest force that could make the box slide along the table?

  4. Physics

    A nail on a vertical wall is pulled by means of a chord attached to its head if the chord makes an angle of 60deg to the horizontal and it exact a force of 80N on the nail find the effective force which tends to pull the nail out

  1. Physics

    A 4.0 kg block is stacked on top of a 12.0 kg block, whcih is accelerating along a horizontal table at a = 5.2 s^-2 m. Let Mu k = Mu s = Mu. (a) What mininum coefficent of friction Mu between the two blocks will prevent the 4.0 kg

  2. Physics

    1. A bullet of 0.0500 kg is fired into a block of wood. Knowing that the bullet left the gun with a muzzle velocity of 350. m/s, and the bullet penetrates .15 m into the block of wood, determine: a) The average force required to

  3. physics

    a roller whose diameter is 20 in weight 72 lbs. what horizontal force is necessary to pull the roller over a brick 2 in high when (a) the force is applied to the center, (b) at the top

  4. Physics

    Two blocks of masses 40.0kg and 20.0kg are stacked on a table with the heavier block on top. The coefficient of static friction is 0.600 between the top and bottom blocks and 0.300 between the bottom block and the table. What is

  1. Physics

    A sniper fires a bullet at 120 m/s at 30° above the horizontal from the roof top of a 35 m high parking garage. If the bullet strikes the level ground beside the parking garage: a) How long was the bullet in the air? b) How far

  2. Physics A level

    A ball rolls along a 1.0m high horizontal table and then falls off of the edge of the table with a horizontal velocity of 4.0ms-1 Calculate: a. time taken for the ball to reach the floor after it leaves the table (2 mark) b.the

  3. Physics

    In a phsics experiment, a 1.3 kg dynamics cart is placed on a ramp inclined at 25 degrees to the horizontal. the cart is initially at rest but is then pulled up the ramp with a force sensor. the force sensor exerts a force on the

  4. Physics Help Please!!!! Urgent!!

    1) A 10 kg lead brick rests on a wooden table. if a force of 46N is required to slide the brick across the table at a constant velocity, what is the coefficient of friction? 2) A horizontal force of 100N is applied to a 200 kg

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