Forces and motion

Post on 24-Jun-2015

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Transcript of Forces and motion

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