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A Net Force acts on an 80 kg object with 600 N in the positive x-direction. If the object is pushed 30 meters from rest, what is the final velocity?
Non-conservative work is equal to a change in potential energy
6.78 m/s
64000 N/m
21.2 m/s
Weight is a force
16 m
Zero
36 m/s
What is the spring constant of a spring that has a potential energy of 2000 J when it is compressed y 25 cm?
Non-conservative work is equal to a change in potential energy
6.78 m/s
64000 N/m
21.2 m/s
Weight is a force
16 m
Zero
36 m/s
A 1000 kg car is initially going at 38 m/s when it hits a gravel road that is 25 m long. If the friction force on the car is 3000 N, then what is the final velocity?
Non-conservative work is equal to a change in potential energy
6.78 m/s
64000 N/m
21.2 m/s
Weight is a force
16 m
Zero
36 m/s
Five workers use 100 N of force to push a 6000 kg object across a frictionless floor. If they do 8000 J of work on the box, how far did they push it?
Non-conservative work is equal to a change in potential energy
6.78 m/s
64000 N/m
21.2 m/s
Weight is a force
16 m
Zero
36 m/s
Which of the following is FALSE
Non-conservative work is equal to a change in potential energy
6.78 m/s
64000 N/m
21.2 m/s
Weight is a force
16 m
Zero
36 m/s
If a force is perpendicular to the motion of some object, then the work done by that force is...
Non-conservative work is equal to a change in potential energy
6.78 m/s
64000 N/m
21.2 m/s
Weight is a force
16 m
Zero
36 m/s
A ball is thrown at an angle of 30 degrees above the horizontal with an initial velocity of 12 m/s. How fast is the ball when it is 5 m in the air? (Ignore air resistance)
Non-conservative work is equal to a change in potential energy
6.78 m/s
64000 N/m
21.2 m/s
Weight is a force
16 m
Zero
36 m/s
Which statement is TRUE
Non-conservative work is equal to a change in potential energy
6.78 m/s
64000 N/m
21.2 m/s
Weight is a force
16 m
Zero
36 m/s
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