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Science Force Test
Terms in this set (22)
What is the formula for force?
Mass * Acceleration
What is the SI Unit for force?
What is friction?
a force that opposes motion between any surfaces touching
What is gravity?
a force of attraction between things that have mass
What is weight?
the measurement of force pulling on an object
What is projectile motion?
the motion of an object with a curved path to the ground
What is orbital motion?
when an object is moving forward and being pulled by gravity to something else
What is elasticity?
the ability for a material to return to its original shape.
What is Newton's first law?
an object at rest will remain at rest and an object in motion will remain in motion unless it is acted on by an unbalanced force
What is inertia?
the tendency of an object to resist change in motion
How does inertia effect the motion of an object?
it resists it
What is Newton's third law?
every action has an equal and opposite reaction
What is momentum?
A property of a moving object that makes it hard to stop
What is the SI unit for momentum?
KG * m/s
Describe how water pressure changes in the ocean.
The deeper you go into the ocean, the more pressure there is in the water.
Why do fluids exert pressure?
their particles are constantly moving and bumping into things
What is the SI unit of measure for pressure?
How do you calculate pressure?
divide force in Newtons (N) by area in square meters (m^2
What does momentum equal?
mass * velocity
Why are action and reaction forces not balanced?
they are equal and opposite
What is the formula for calculating weight?
F = m × 9.8 m/s^2
What does Newton's second law state?
the acceleration of an object equals the net force acting on the object divided by the object's mass
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