Physical Science Unit 5 - Work
5 joules
A box of groceries requires five newtons of force to lift it one meter to the counter. How many joules of work is done?
100 joules
A person weighing 50 newtons climbs a 2-meter ladder. How many joules of work is done?
Newton meter
Each joule of work is one __________________________ (units) of energy.
30 joules
How many joules of work is done when a force of 10 newtons is used to lift a boy 3 meters into the air?
The force must be in the same direction as movement.
In the math equation W = F × D, what relationship is required for work to be accomplished?
thermodynamics
James Joule is credited with founding the science of ____________________________________.
Law of Conservation of Matter and Energy
The First Law of Thermodynamics is generally referred to as __________________________________________________.
Joule
The standard unit of work in the metric system is named after the scientist ________________.
- The law confirms that matter or energy could not create itself. - The law is completely consistent with the Bible's account of Creation.
Which statement(s) is/are true regarding the First Law of Thermodynamics?
False
Work against gravity is done if you carry a book across a room.
True
Work is done if water falls from the top of a dam.
True
Work is done if you lift a brick.
True
Work is done if you push a box across a room.
True
Work is done if you push a child in a wagon.
False
Work is done if you push against a wall.
force, distance
Work is equal to __________ times ________________.
energy
Work is the quantity of _____________ used to move an object.
0
________________ joules of work is done when a book weighing 2.125 N is carried from a desk in one classroom to a desk in another, 25.796 m along a straight hall.