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16 Cards in this Set
- Front
- Back
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when objects fall toward Earth with no forces acting upward; air resistance is neglected when it comes to this
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free fall
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the product of the fource and the time of application
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impulse
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tendency of an object to remain in unchaging motion whether actually moving or at rest, when the net force is zero
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inertia
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the total momentum of a group of interacting objects remains constant in the absence of external forces
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law of conservation of momentum
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the product of the mass of an object times ins velocity
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momentum
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a unit of force defined as kg.m/s2; this is needed to accelerate a 1 kg mass 1 m/s2
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newton
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Quantityof 5 m/s2 is a measure of
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acceleration
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Automobile has how many different devices that can cause it to undergo acceleration
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three or more
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Ignoring air resistance, an object faling toward the surface of Earth has a velocity that is
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increasing
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Ignoring air resistance, an object falling near the surface of Earth has an acceleration that is
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constant
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Two objects are released from the same height at the same time and one has twice the weight of the other. Ignoring air resistance
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they both hit at the same time
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A ball rolling across the floor slows to a stop because
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there is a net force acting on it
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Considering the forces on the system of you and a bicycle as you pedal the bike at a constant velocity in a horizontal straight line
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all forces are in balance, with the net force equal to zero
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If you double the unbalanced force on an object of a given mass, the acceleration will be
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doubled
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If you double the mass of a cart while it is undergoing a constant unbalanced force, the acceleration will be
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half as much
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Doubling the distance between the center of an orbiting satellte and the center of Earth will result in what change in the gravitational attraction of Earth for the satellite
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one fourth as much
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