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Ch 8 Questions

QuestionAnswer
Work is... The transfer of energy to an object by using force that causes the object move into the direction of the force
What is kinetic energy energy in motion
Work only occurs when... The object must move in the same direction as the force
What 2 things happen for work to be done the object move the same direction as the force,
Explain how both sets of climbers are using the same amount of work even though one is climbing up the mountain and the others are walking up The work is equal to fxd
Joule is... the si unit for newtons x second
What is the power formula P=t/W
Watt is... unit that expresses power
"Now its your turn"Questions 1)15 2)100
Machine is... a device that makes work easier by changing distance, direction, or force
Work output is... The work you do on the machine
Work input is... Work done by the machine
"Standards check" Machines make less force, or distance
How do machines make work easier Machines allow more distance less force and vise versa
The ramp allows a smaller ___ to be applied but requires the force to be applied over a longer ___________ Force,distance
Mechanical Advantage is... Mechanical Advantage is the number that tells how many times the machine multiply the force
Formula for MA output force/input force
Created by: Jovann Ord