A box is lifted 100 meters with a force of 5 Newton's in 1 minute and 25 seconds. How much work was done on the box? (W=F x d)
500 Joules
100
What is another name for an inclined plane?
ramp
100
Machines that are made of two or more simple machines are called what?
A compound machine
200
when the weight is held at Mitch's chest, it has ------------ energy
potential energy
200
Where is the fulcrum for the first, second, and, third class lever?
first- middle
second+third- the end
200
A piano is lifted 200 meters with a force of 50 Newton's in 100 seconds. About how much power did it take to lift the box? (P= w/t)
100 Watts
200
Give an example of a wedge
Knife, axe , etc.
200
A person on a wheel chair going onto the thing next to the stairs.... that kind of didn't make sense, going up a ramp, your welcome I gave you half of the answer, what two machines does she need to use?
An inclined plane and wheel and axle
300
What energy changes occur while a child is riding on a sled down a steep, snow-covered hill?
Potential to kinetic
\\
Potential energy decreases and kinetic energy increases
300
Where is the load for the first, second and third class lever
first- either ends
second- the middle
third- the end that the fulcrum is not
300
If 550 J of work was done in 50 seconds, what was the power output? (P= W/T)
11 watts
300
what is an example of a pulley?
A clothesline etc.
300
Name three things that are not simple machines
ANYTRHING
400
List three appliances that can transform electrical into mechanical energy?
fan
non-digital clock
toy car
400
Where is the effort for the first, second, and third class lever?
first- either ends
second- the side that the fulcrum is not on
third- the middle
400
A force of 25 N is exerted over a distance of 6 meters. How much work was done?
150 Joules
400
What is an inclined plane wrapped around a cylinder called?
A screw
400
Out of a candle, a match, a battery, and pliers which is a simple machine?
pliers
500
Does a person have potential or kinetic energy right before releasing the arrow when playing archery?
Potential energy
500
What type of lever do scissors represent?
Two first class levers working together
500
Heres a free 500 points!
I couldn't think of anything, but HAPPY BIRTHDAY!!!
500
What kind of pulley is attached to something that does not move?
A fixed pulley
500
This is the hardest question yet.... good luck! How old are Devin, Greg, Avi, and Reece added up together? :)