1
An example of rolling friction is
riding a bike, roller skating
moving energy is..
kinetic energy
An example of sliding friction would be...
sliding down a sliding board
stored energy is..
potential energy
Swimming in a pool is what type of friction?
fluid friction
how fast an object is moving
speed
A flagpole is an example of which simple machine?
(pulley, wheel and axle, wedge, inclined plane, screw, lever)
pulley
It takes more force to move a bowling ball than it would to move a tennis ball because the bowling ball has a bigger mass. Which of Newton's laws is this? (1st, 2nd, 3rd)
2nd
a sled going down a hill is potential or kinetic energy
kinetic energy
push or a pull
force
Are scissors a simple or compound machine?
compound
a roller coaster at the top of the hill is potential or kinetic energy
potential
A change in an object's position (example-If I walk from the door to the desk)
motion
When you use force to kick a ball, the ball also exerts force on your foot. Which of Newton's Laws is this-1, 2 or 3?
Newton's 3rd law of motion
ability to do work
energy
amount of force it takes to move an object over a distance
work
What type of simple machine is a knife?
(pulley, wheel and axle, wedge, inclined plane, screw, lever)
wedge
Newton's 3rd law states for every action there is an equal and opposite reaction. (T or F)
true
friction
Newton's 2nd law states that the GREATER the mass of an object, the SMALLER the force needed to move the object. (T or F)
false, the greater the mass, the greater the force to move the object.
Newton's 1st Law states that an object an rest will stay at rest and an object in motion will stay in motion unless acted upon by an unbalanced force (T or F)
true
this type of machine is made up of 2 or more simple machines
compound machine
Is a can opener a simple or compound machine?
compound machine
This type of machine is made up of few or no moving parts
simple machine
What type of simple machine is a car steering wheel?
(pulley, wheel and axle, wedge, inclined plane, screw, lever)
wheel and axle