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Work = force x distance = (4 x 10) = 40 newton-meters = 40 joules
Work done = Force x distance moved in the direction of force So work done = 15 x 20 = 300 joule That force 15 newton would be the necessary and equivalent force to overcome the static frictional force. Static frictional force depends, of course, on the mass of the box.
your weight
A force of 4500 Newtons is required.
F = M A = 2 x 6 = 12 newtons
Work = force x distance = (4 x 10) = 40 newton-meters = 40 joules
Work done = Force x distance moved in the direction of force So work done = 15 x 20 = 300 joule That force 15 newton would be the necessary and equivalent force to overcome the static frictional force. Static frictional force depends, of course, on the mass of the box.
approximately 7000 newtons
Force = Mass * Acceleration = 1 * 2 = 2 Newtons
There is some confusion here. 500 newtons IS a force. You don't "give a force an acceleration". You can accelerate an object (which has a mass), but not a force.
F = m a = (976) (2.5) = 2,440 newtons
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66.8
Power = (energy) / (time) =(200 newtons x 4 meters) / (4 seconds) =200 newton-meters per second = 200 watts
your weight
A force of 4500 Newtons is required.
F = (m) x (A) = (1) x (12) = 12 newtons