081006

In the MKS system, what is the unit of mass, expressed in the fundamental units of kg, meters and seconds?

In the MKS system, what is the unit of position, expressed in the fundamental units of kg, meters and seconds?

In the MKS system, what is the unit of velocity, expressed in the fundamental units of kg, meters and seconds?In the MKS system, what is the unit of acceleration, expressed in the fundamental units of kg, meters and seconds?

In the MKS system, what is the unit of force, expressed in the fundamental units of kg, meters and seconds?

In the MKS system, what is the unit of work, expressed in the fundamental units of kg, meters and seconds?

In the MKS system, what is the unit of momentum, expressed in the fundamental units of kg, meters and seconds?

In the MKS system, what is the unit of impulse, expressed in the fundamental units of kg, meters and seconds?

A certain object is subjected to a certain net force, resulting in a certain acceleration.  If the same mass is subjected to double the force, is the resulting acceleration the same as, double, half, more than double or less than half the original?

A certain object is subjected to a certain net force, resulting in a certain acceleration.  If the mass of the object is doubled, then if it is subjected to the same net force, will its acceleration be the same as, double, half, more than double or less than half the original?

A certain object is subjected to a certain net force, resulting in a certain acceleration.  If the same mass  is subjected to the half the net force, will its acceleration be the same as, double, half, more than double or less than half the original?

A certain object originally at rest is subjected to a certain net force, resulting in a certain acceleration, which continues through a certain displacement in the direction of the force, resulting in a certain final velocity.  If the same mass is subjected to double the force, is the resulting final velocity the same as, double, half, more than double or less than half the original?

A certain object originally at rest is subjected to a certain net force, resulting in a certain acceleration, which continues through a certain displacement in the direction of the force, resulting in a certain final velocity.  If the same mass is subjected to the same force over twice the displacement, is the resulting final velocity the same as, double, half, more than double or less than half the original?

A certain object originally at rest is subjected to a certain net force, resulting in a certain acceleration, which continues through a certain displacement in the direction of the force, resulting in a certain final velocity.  If the same mass is subjected to the same force but the duration of the time interval is doubled, is the resulting final velocity the same as, double, half, more than double or less than half the original?

A certain object originally at rest is subjected to a certain net force, resulting in a certain acceleration, which continues through a certain displacement in the direction of the force, resulting in a certain final kinetic energy.  If the same mass is subjected to the same force over twice the displacement, is the resulting final kinetic energy the same as, double, half, more than double or less than half the original?

On a certain interval, an object accelerates in such a way as to double its kinetic energy.  Is its final velocity the same as, double, half, more than double, or less than half its original velocity?

A certain object has a certain velocity.  Another object, whose mass is the double that of the first, has double its kinetic energy.  Is the velocity of the second the same as, double, half, more than double, or less than half its original velocity?

A certain object has a certain velocity.  Another object, whose mass is the double that of the first, has half its velocity.  Is the kinetic energy of the second the same as, double, half, more than double, or less than half its original velocity?

A certain object has a certain velocity.  Another object, whose mass is the double that of the first, has half its velocity.  Is the momentum of the second the same as, double, half, more than double, or less than half its original velocity?

What is the net force exerted on a mass of 3 kg if it accelerates at 5 m/s^2?

What is the mass of an object that accelerates at 12 m/s^2 when subjected to a force of 36 kg m/s^2?

What is the acceleration of a 5 kg mass if the net force on it is 20 kg m/s^2?

What is the weight of a 60 kg mass? (Hint: What acceleration does it experienced due to gravity?)

If a net force of 10 kg m/s^2 acts on an object as it travels 30 meters in the direction of motion, then how much work is done on the object?

What is the kinetic energy of a 12 kg mass moving at 5 m/s?

If a 50 kg object has a kinetic energy of 800 kg m^2/s^2, then what is its velocity?

If an object of mass 5 kg has momentum 80 kg m/s, then how fast as it moving?

If an object has mass 5 kg and is moving at 20 m/s, then what is its momentum?

What is the impulse of a 2000 kg m/s^2 net force which acts on an object for .2 seconds?

If the object in the preceding has mass 5 kg and an initial velocity of 20 m/s, what is its initial momentum, what is its change in momentum, and what therefore is its final momentum?

What therefore is the final velocity of the object?

If an object starts out with a kinetic energy of 40 kg m^2/s^2 and is subjected to a net force of 10 N in its direction of motion, then what is its kinetic energy after having moved 8 meters?

Can you determine the initial or final momentum of this object over the given interval? Can you determine its change in momentum?

If you are given the mass of the object, can you then determine the specified momentum information? If so, would the momentum be different for a different mass?

If an object starts out with a momentum of 40 kg m/s and is subjected to a net force of 10 N in its direction of motion, then what is its momentum 5 seconds later?

Can you determine the initial or final KE of this object over the given interval? Can you determine its change in KE?

If you are given the mass of the object, can you then determine the specified KE information? If so, would the KE be different for a different mass?

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forces, directions, ball up and down incline, F = m a

You have a table and a graph of tension vs. length for you rubber band chain, and a straight-line approximation to the graph.

Extend the straight-line approximation until it intersects the horizontal axis. Then divide your graph into three equal segments, with the first segment starting at this intersection point. Find the area beneath each segment.

You have also determined the sliding distance of a domino, the rubber band length required to achieve this sliding distance and the graph area associated with this length.

The weight of the domino is approximately .19 Newtons. The frictional force between the domino and the tabletop is probably around 15% of the weight of the domino. What therefore is the product of the frictional force and the displacement of the sliding domino? How does this product compare with the associated graph area?

Slide the rubber band across the tabletop and, as best you can, determine how long it takes to come to rest after you release it, and how far it travels during this interval. Use this information to estimate its acceleration.

You determined the acceleration of the ball as it rolled up and down the incline. Steel has a mass density of approximately 7000 kg for every cubic meter of volume (i.e., its density is 7000 kg / m^3), or 7 grams for every cubic centimeter of volume (density 7 g / cm^3). Glass has a mass density of approximately 2.6 grams / cm^3. You rolled either a steel ball or glass marble up the incline, and down the incline as you timed it in both directions. You determined its acceleration in both directions. Take whatever measurements you consider necessary to determine the net force on an object as it rolled up the incline, and as it rolled down the incline.