forces and motion
TRANSCRIPT
Q: The amount of matter in an object
A: Mass
Q: The unit of measurement for mass
A: Grams/Kilograms
Q: The 3 states of matter are…
A: Solid, Liquid, Gas
Q: A change in the state of matter is caused by…
A: A change in temperature. (Adding or removing heat.)
Q: When a force moves an object.
A: Work
Q: The unit of measurement for work.
It measures heat, electricity and mechanical work.
A: Joule
Joule’s Apparatus
Q: Newton’s First Law of Motion
A: InertiaAn object at rest will stay at rest; an object in motion will stay in motion unless acted on by
an outside force.
Q: Newton’s Second Law of Motion
A: Force = Mass X Acceleration
Q: The unit of measurement for force
A: Newton
Q: Newton’s Third Law of Motion
A: For every action there is an equal and opposite reaction.
Q: The force that slows or prevents motion.
A: Friction
Q: Force created by magnetic objects.
A: Magnetism
Q: Force applied when doing work.
A: Effort Force (EF)
Q: Force to overcome when doing work.
A: Resistance Force (RF)
Q: Formula to calculate speed/velocity
A: Speed (velocity) = Distance X Time
Q: A change in speed or direction.
A: AccelerationTo speed up, slow down, or change direction
Q: The unit of measurement for acceleration
A: (CM)Meters/sec/sec or (CM)Meters/sec2
Q: A machine that changes the size or direction of an applied
force.
A: Simple machine
Q: Simple machine with two wheels that rotate together.
A: Wheel and axle
Q: A simple machine that is a sloping surface used to raise
objects (ramp, stairs)
A: Inclined plane
Q: A simple machine that is an inclined plane wrapped around a
cylinder. (propeller, circular staircase)
A: Screw
Q: A simple machine made of two inclined planes back to back
(knife, ax, needle, bow of a boat)
A: Wedge
Q: Simple machine composed of a bar pivoting around a fixed point
(fulcrum).
A: Lever
Q: Fixed point that a lever turns around.
A: Fulcrum
Q: A simple machine with a grooved wheel with a rope or
chain running along the groove.
A: Pulley