Physics

A worker pushes a crate horizontally across a warehouse floor with a force of 245 N at an angle of 55 degrees below the horizontal. How much of the worker’s force is not used to move the crate?
200.69 n
419.95 n(my choice/guess)
357.71 n
191.32 n

You stand in top a building 44 m talk with a water ballon. You drop the water ballon from rest. How fast is the balloon moving when it is halfway down the building?
20.78 m/s
39.81 m/s(my choice/guess)
19.68 m/s
26.92 m/s

  1. 👍 0
  2. 👎 0
  3. 👁 310
  1. He only pushed with 245 !!, no way bigger component
    245 - 245 cos 55 = 245 (1 - cos 55)

    1. 👍 0
    2. 👎 0
  2. falls 22 m from stop at 9.81 m/s^2
    22 = (1/2)(9.81) t^2
    so
    t^2 = 4.48
    t = 2.12 seconds
    v = 9.81 t = 20.78 m/s

    1. 👍 0
    2. 👎 0
  3. or for first one, what is force down (not used)
    245 * sin 55 = 200.69

    1. 👍 0
    2. 👎 0
  4. 2. V^2 = Vo^2 + 2g*d = 0 + 19.6*22 = 431.2.
    V = 20.8 m/s.

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. PHYSICS

    A warehouse worker pushes a crate along the floor, as shown in the figure , by a force of 10.0 N that points downward at an angle of 45.0 degree below the horizontal. A. Find the horizontal component of the push. B.Find the

    asked by mely on February 2, 2011
  2. Physics

    I was wondering if my answers are correct. Thanks in advance. 1. A boy pushes down on a car rolling horizontally down the road. The boy pushes down vertically with 10N of force as the car rolls 3.0m horizontally. What work is

    asked by Liz on February 3, 2014
  3. physics

    to push a 25 kg crate up a 27 incline, a worker exerts a force of 120 N, parallel to the incline. As the crate slides 3.6 m, how much work is done on the crate by a) the worker b) force of gravity c) normal force

    asked by amy on October 31, 2011
  4. Physics

    1. A worker pulls horizontally on a crate across a rough horizontal surface, causing it to move forward with constant velocity. Force A is the force exerted by the worker and force B is the force of friction due to the surface.

    asked by Ams on October 19, 2018
  5. physics

    A worker in a warehouse uses a rope passing through some pulleys to lift a heavy crate. The worker exerts a force five times less than the weight of the crate but has to move the rope four times as far as the crate moves. This

    asked by Belinda on July 5, 2014
  1. Physics

    A rope exerts a constant horizontal force of 203N pulling a 68-kg crate across the floor. The velocity of the crate is observed to increase from 3m/s to 5m/s in a time of 4 seconds under the influence of this force and the

    asked by Tim on June 21, 2013
  2. PHYSICS

    A worker pulls a 200-N packing crate at constant velocity across a rough floor by exerting a force F = 55.0 N at an angle of 35.0 degrees above the horizontal. What is the coefficient of kinetic friction of the floor?

    asked by Meme on October 3, 2013
  3. Dot Product 1

    A crate is dragged 3m along a smooth level floor by a 30n force applied at 25deg to the floor. Then it is pulled 4m up a ramp inclined at 20deg to the horizontal, using the same force. Then, the crate is dragged a further 5m along

    asked by Shaila on August 9, 2010
  4. physics

    Two workers are sliding 330 kg crate across the floor. One worker pushes forward on the crate with a force of 410 N while the other pulls in the same direction with a force of 240 N using a rope connected to the crate. Both forces

    asked by yahya on November 6, 2015
  5. physics

    Two workers are sliding 450 kg crate across the floor. One worker pushes forward on the crate with a force of 380 N while the other pulls in the same direction with a force of 380 N using a rope connected to the crate. Both forces

    asked by Zachary on November 14, 2017

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