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What quantity of motion is mathematically defined as the product of an objects mass and
velocity? correct answers momentum
Whose teachings dominated scientific thought for almost 2 thousand years? correct answers
Aristotle
Who discovered the laws of motion and gravitation laying the foundation for much of modern
physical science correct answers Issac Newton
What is the speed of an object that traveled 19m in 2.0s? correct answers 9.5 m/s (a)
Which of the following is a true form of assistance that a simple machine can provide? correct
answers All are forms of assistance that a simple machine can provide
What is any variation in the rate of an object's change in position over time? correct answers
acceleration
What is the SI unit of work? correct answers joule
How are levers classified? correct answers arrangement of arms and fulcrum
How far will an object fall if it is affected by only gravity and falls for 3.0s? correct answers 44m
(c)
What is a simple machine consisting of a wheel over which a rope or cable passes? correct
answers pulley
, What is the ideal mechanical advantage of an inclined plane with a length of 3.0m and a height
of 1.5? correct answers 2.0(B)
What is the velocity at which air resistance stops a falling from accelerating? correct answers
terminal velocity
What is any mathematical quantity that has both magnitude and direction? correct answers vector
Together the physics discovered before 1900 are called? correct answers classical physics
The sum of two or more vectors? correct answers resultant
An object that hangs from a fixed point and swings back and forth because of gravity? correct
answers pendulum
The distance an object travels per unit of time? correct answers speed
The measure of how well a machine converts input work to output work? correct answers
efficiency
A "center-seeking" force that causes an object to travel in a curved path correct answers
centripetal force
The simple machine which is like an inclined plane that modifies the applied force and directs it
to the side? correct answers wedge
A crate was being pushed to the left by one person with a force of 35N and to the right by by
another person with force with a force of 26N. What is the net force acting on the crate? correct
answers 9N to the left (a)