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23 Cards in this Set
- Front
- Back
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How fast an object is moving in a particular direction is described by: |
Velocity |
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A car is moving at 60km/h comes to a stop in 10s when the driver slams on the brakes. In this situation, what does 60km/h represent? |
Initial Speed |
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According to Galileo, and object moving without opposing friction or other opposing forces will: |
Continue moving at a constant speed |
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A tennis ball is hit, causing it to move upward from the racket at some angle to the horizon before it curves back to the surface in the path of a parabola. |
Horizontal speed remains the same |
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An automobile has how many different devices that can cause it to undergo acceleration? |
Three or more |
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Ignoring air resistance, an object falling near the surface of earth has an acceleration that is: |
Constant |
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A ball rolling across the floor slows to a stop because: |
There is a net force acting on it |
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Does any change in the motion of an object result in an acceleration? |
Yes |
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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 |
All forces are in balance, with the net force equal to zero |
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You are standing freely on a motionless shuttle bus. When the shuttle bus quickly begins to move forward, you |
Stay in one place over the surface of the Earth as the shuttle bus moves from under you |
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Which metric unit is used to express a measure of weight? |
N |
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If you double the unbalanced force on an object of a given mass, the acceleration will be |
Doubled |
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Doubling the distance between the center of an orbiting satellite and the center of Earth will result in what change in the gravitational attraction of Earth for the satellite? |
One-fourth as much |
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A ball is swinging in a circle on a string when the string length is doubled. The resulting momentum is |
One-half as much |
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Two identical moons are moving in identical circular paths, but one moon is moving twice as fast as the other. Compares to the slower moon, the centripetal force required to keep the faster moon on the path is |
Four times as much |
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Newton's law of gravitation tells us that |
Every object in the universe is attracted to every other object in the universe |
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A measure of the force of gravity acting on an object is called: |
Weight |
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One-half |
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Balanced, with a net force of zero |
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Both balls would have the same speed |
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A gun is aimed horizontally at the center of an apple hanging from a tree. The instant the gun is fired, the Apple falls and the bullet |
Hits the Apple |
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A small sports car and a large SUV collide head on and stick together without sliding. Which vehicle had the larger momentum change? |
It would be equal for both |
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One-ninth as much |
