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chapter 12 icp short

short answer questions

QuestionAnswer
how can an arrow be used to represent the size and direction of force? length of arrow= size of force point of arrow= direction of force
what happens to the magnitude of the fluid friction acting on a submarine as the submarines speed increases? the friction increases.
what is the direction of the net force on a falling sky diver before she reaches terminal velocity? and after she is falling at terminal velocity? down then no net force
how can you double the acceleration of an object if you cannot alter the objects mass? double the force
how are the size and direction of action and reaction forces related? all equal in size and opposite in direction.
a billiard ball with a momentum of 20 kg x m/s strives a second ball at rest and comes to a complete stop. what is the change in momentum of the second ball? 20 kg/MS
compare the speed of a moving golf ball with the speed of a moving bowling ball if both balls have the same amount of momentum. the golf ball is faster
which of the universal forces acts only on protons and neutrons in the nucleus of an atom? the strong nuclear force
what is the primary cause of the earths ocean tides? gravitational force
a tow truck exerts a horizontal force of 1050 N on an 760 kilogram car. what is the acceleration of the car during this time? 1.38m/s^2 (1050N/ 760 kg)
the mass of a newborn baby is 3.5 kg. what is the baby's weight? 34.4N (3.5kg x 9.8 m/s^2)
a 38 kg canoe broke free of its dock and is now floating downriver at a speed of 2.2m/s. what is the canoes momentum? 83.6 kg x m/sec (38kg x 2.2 m/sec)
a small engine causes a 0.3 kg model airplane to accelerate at a rate od 11 m/s^2. what is the net force on the model airplane? 3.3N (0.3kg x 11m/s^2)
Created by: marissa24
 

 



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