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Physics Watch

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    a student apparently weighs 180 lb in an elevator that is accelerating at the rate of 5ft/s^2

    a) What is the true weight of the student?
    b) What will be the apparent weight of the student when the elevator now decelerates at the rate of 2 ft/s^2?
    c) What should be the elevator's acceleration in order for the apparent weight of the student to be equal to 160 lb?
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    (Original post by gervysjedm)
    a student apparently weighs 180 lb in an elevator that is accelerating at the rate of 5ft/s^2

    a) What is the true weight of the student?
    b) What will be the apparent weight of the student when the elevator now decelerates at the rate of 2 ft/s^2?
    c) What should be the elevator's acceleration in order for the apparent weight of the student to be equal to 160 lb?
    Can whoever set you these questions not help you?
    This is some crzy complicated ****!
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    You have not mentioned which way the lift goes, up or down? That will determine what equation to write.
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    Can you help me to solve this problem?
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    A red ball is thrown straight up from the edge of the roof of a building.A green ball is dropped from the same point 1.80 seconds later.
    If the height of the building is 60.0 m , what is the initial velocity of the red ball,if both balls are to hit the ground at the same time?
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    Hello,

    I was wondering if anyone could help me with drawing an energy transfer flow chart thing for these things (as well as a detailed explanation of the flow chart?).

    Here is the information on what I have to do:

    Create a handout or poster to show how energy is transferred from one form to another. For each of the following applications create a flow chart to illustrate how energy changes from the initial form to the final form via all intermediary stages. Include a description to explain how the energy is transferred and how energy is wasted.

    •An electric powered hoist lifting a packing case off a lorry and then lowering itonto the floor of a warehouse.
    •A petrol powered electrical generator providing power for the stage lighting at Glastonbury.
    •A seat belt restraining the driver of a car during a traffic accident.
    •A battery used to power an MP3 player.
    •An electric kettle heating water for a hot drink.
    •A coal fired furnace and boiler in a conventional power station, ending with electricity being produced.

    It would be a great help if someone could! And thanks in advance!

    Ak
 
 
 
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