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icp chapter 12 mult

test

QuestionAnswer
the SI unit for force is the... newton
which of the following relationships is correct? 1N= 1 kg x m/s^2
when an unbalanced force acts on an object... the object accelerates
when a pair of unbalanced forces act on an object, the met force that results is... equal to 0
as you push a cereal box across a tabletop, the sliding friction acting on a cereal box... acts in the direction opposite of motion
an open parachute increases air resistance of a falling sky diver by... increasing surface area
projectile motion is caused by... the downward force of gravity and an initial forward velocity
the property of matter that resists changes in motion is called... inertia
an orange might roll off your cafeteria tray when you stop suddenly because of... the oranges inertia
according to newtons second law of motion, the acceleration of an object equals the net force acting on the object divided by the objects... mass
if a force of 12N is applied to an object with a mass of 2 kg, the object will accelerate at... 6 m/s^2
your weight equals your... mass times the acceleration due to gravity
the acceleration due to gravity on the surface of Mars is about one third the acceleration due to gravity on Earths surface. The weight of a space probe on the surface of Mars is about... one third its weight on earths surface
newtons third law of motion describes... action and reaction forces
what is conserved when two objects collide in a closed system? momentum
what is the momentum of a 50 kg ice skater gliding across the ice at a speed of 5 m/s? 250 kg x m/s (50 x 5)
what force is responsible for the repulsion between two positively charged particles? electric
when opposite poles of two magnets are brought together, the poles... attract eachother
which universal force acts only on the protons and neutrons in a nucleus? strong nucleus
as an astronaut travels far away from earth, her weight... decreases because gravity decreases
the gravitational force between two objects increase as mass... increases or distance decreases
the force that keeps an object moving in a circle is called... centripetal force
Created by: marissa24
 

 



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