PHYS 1111: Final Exam
21 Cards in this Set
| Front | Back |
|---|---|
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Baseball thrown vertically up (ignore air resistance) and returns where it started.
The average velocity is zero?
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TRUE
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Baseball thrown vertically up (ignore air resistance) and returns where it started.
The average speed is zero?
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FALSE
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Baseball thrown vertically up (ignore air resistance) and returns where it started.
The initial velocity and final velocity are equal?
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FALSE
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Baseball thrown vertically up (ignore air resistance) and returns where it started.
The total displacement is zero?
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TRUE
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Baseball thrown vertically up (ignore air resistance) and returns where it started.
The initial speed and final speed are equal?
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TRUE
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Baseball thrown vertically up (ignore air resistance) and returns where it started.
The average acceleration is zero?
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FALSE
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A cart of mass m can move w/o friction on an airtrack. Initially at rest. The for limited time it is pushed down the track with constant F.
When you stop pushing, there are no forces acting on the cart?
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FALSE
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A cart of mass m can move w/o friction on an airtrack. Initially at rest. The for limited time it is pushed down the track with constant F.
The work done by F is equal to the Kinetic energy?
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TRUE
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A cart of mass m can move w/o friction on an airtrack. Initially at rest. The for limited time it is pushed down the track with constant F.
The higher the mass of the cart, the harder you have to push to achieve the same final speed in the same amount of time?
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TRUE
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A cart of mass m can move w/o friction on an airtrack. Initially at rest. The for limited time it is pushed down the track with constant F.
You exert force on the cart, the cart does not exert force on you.
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FALSE
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A cart of mass m can move w/o friction on an airtrack. Initially at rest. The for limited time it is pushed down the track with constant F.
When you stop pushing, the cart will continue moving at the same speed.
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TRUE
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An object can be in motion and still have zero net force acting on it?
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TRUE
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An object at rest has no forces acting on it?
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FALSE
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An object can be moving in one direction while the net force acting on it is in another direction?
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TRUE
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In order to move a massive crate sitting on the floor, the force you apply to the crate has to overcome the force of the crate pushing back on you?
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FALSE
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It is possible for two isolated objects to collide so that all the initial kinetic energy of the system is lost?
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TRUE
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Two cars collide at an intersection, but do not stick together after the collision. Therefore, the collision was elastic?
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FALSE
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A system of particles with zero kinetic energy must also have zero momentum?
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TRUE
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An object at rest on a slick surface is struck by a second object. After the collision, both objects must be moving?
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FALSE
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A system of particles with zero momentum must also have zero kinetic energy?
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FALSE
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You jump out of an airplane, plane parachute opens after a brief free fall.. In order for your fall to slow, the parachute must exert a force that is:
equal to your weight
greater than your weight
less than your weight
|
Greater than your weight
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PHYS 1111: Common Prefixes