physics test ch. 6-7 (part 1)

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inversely proportionality

1 quantity increases, other decreases

200N

a 100N force is used to accelerate a large push cart across the floor...how much force is required to accelerate push cart twice as fast

free-body diagram

a diagram in which all of the forces acting on an object are shown

newton's second law

acceleration is directly proportional to net force; direction of acceleration is same as net force; acceleration is inversely proportional to mass

increases

acceleration of an object is directly proportional to the net force acting on it...this means that as the net force acting on the object increases, the acceleration of the object _____

terminal speed

acceleration of falling object is zero

halving the mass

an object accelerates when a net force is applied to it...what would double the object's acceleration

decreases

as the area of a force acts on increases the force exerted on each unit of area _____

net

combination of forces acting on an object is known as the _____ force

pressure = force/area

equation for pressure when the force is perpendicular to the surface area

pressure

force per unit of area

friction between 2 solid surfaces

friction is due to irregularities in the 2 forces being pressed together; force needed to move 1 material up and over the other

acceleration ~ 1/mass

how mass and acceleration are related

mass; acceleration

increase in _____ decreases _____

pascal

measurement of pressure

acceleration

net force acting on an object causes _____

a = F/m

newton's second law of motion

free fall

object dropped in air that experiences no air resistance

mass

quantity related by newton's second law

force and area

quantity related to pressure

terminal velocity

terminal speed + direction

unbalanced

the type of force that causes acceleration

true

true or false: acceleration of object is equal to net force acting on it divided by object's mass

true

true or false: friction depends on how much the materials in contact are pushed together

false

true or false: friction does not depend on the types of material in contact with each other

true

true or false: when friction is present and object can move with constant velocity even when an outside force is applied

newtons per square meter

unit for pascals

unbalanced force; accelerates

when a hockey puck is struck with a hockey stick an _____ acts on the puck and the puck _____

m/s² ; kg

when using the equation for newton's second law, if force is measured in newtons, then the unit for acceleration is _____ and the unit for mass is _____


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