Physics Exam 2 (final)

Physics
Created Dec 10, 2012
by leahknew
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If you push an object twice as far while applying the same force, you do
twice as much work
A job is done slowly, while an identical job is done quickly.  Both jobs require the same...
power
If an object is raised twice as high, its potential energy will be
twice as much
A ball rolling down an incline has its maximum kinetic energy at
the bottom
No work is done by gravity on a bowling ball that rolls along a bowling alley becauuse
the force on the ball is at right angles to the ball's motion
A jack system will increase the potential energy of a heavy load by 1000 J with a work input...
50%
A moving object  has
speed, velocity, momentum, and energy
A feather and a coin dropped in a vacuum fall with equal
accelerations
Which moves faster in m/s on a merry-go-round: a horse on the inside or a horse on the outside...
outside horse
An industrial flywheel has a greater rotational inertia when most of its mass is 
nearest the rim
A coin and a ring roll down an incline starting at the same time.  The one to reach the...
coin
Put a pipe over the end of a wrench when trying to turn a stubborn nut on a bolt, to effectively...
two
When a twirling ice skater brings her arms inward, her rotational speed
increases
Consider a rotating donut-shaped space habitat where living quarters are on the inside surface...
increases
For a system in mechanical equilibrium the resultant forces and torques must
both be zero
According to Newton, the greater the masses of interacting objects, the
greater the gravitational force between them
According to Newton, doubling the distance between two interacting objects
divides by 4 the gravitational force between them
What is the force of gravity on a 500 N woman standing on the Earth's surface?
500 N
The earth's gravitational field extends
both inside and outside the earth and throughout the entire universe
Which is most responsible for the ocean tides? the moon or the sun?
the moon
According to Kepler's laws, the paths of planets about the sun are
ellipses
Roll a bowling ball off the edge of a table. As it falls, its horizontal component of velocity
remains constant
An earth satellite is simply a projectile
freely falling around the earth
the fastest moving planet in a solar system is
the planet nearest hte sun
a "weightless" astronaut in an orbiting shuttle is
like the shuttle, pulled by earth's gravitation


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