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Unit 3 Ch1 Forces

Unit 3 Ch 1 Forces Science Vocab

QuestionAnswer
Push or pull that causes an object to move, stop or change direction is force
Amount of work done for each unit of time is power
Use of fore to move an object through a distance is work
Value of combined forces on an object is net force
Force that pulls all object toward each other is gravitation
Opposing forces of which one force is greater than the other is unbalanced forces
A thing that makes work seem easier by changing the size or diretion of a force is machine
Force of pulling between magnets and magnetic objects is magnetism
Force that opposes motion when two surfaces rub against each other friction
Froces equal in size and opposite in direction balanced forces
Forces include: gravity, friction, and magnetism
The force of ____________ is what causes a teardrop to roll down someone's cheek. gravity
_______________ is the force that slows a skateboard when a skateboarder puts a foot down to brake. friction
__________________ Have a force that acts on objects without touching them. Magnets
If two arm wrestlers exert a force on each other's hands and the hands don't move, the forces are _______________ balanced
If a magnet can't hold a piece of paper against a refrigerator, the forces acting on the magnet are ______________________. unbalanced
Two people try to push a 2000 mewton crate, but it doesn't move. They have done _________________ of work. zero joules
When you lift a 2-newton book 1 meter off of your desk, you do ___________________ of work. 2 joules
A ________________ can change the size or direction of a force. machine
A shovel is a ___________________________ made up of a lever and a wedge. compound machine
Created by: 529388526
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