contact forces & motion Flashcards

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1
Q

does mass change

A

not usually

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2
Q

can weight change

A

yes if the force of gravity changed

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3
Q

if two objects have the same mass which one will have the greatest change in speed

A

the object acted on by a greater force

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4
Q

unbalanced force causes

A

causes objects to slow down, speed up, or change direction

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5
Q

balanced force

A

a force that is equal in strength buy opposite in direction

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6
Q

Newtons 1st law

A

Intertia- The property it matter to want to not move when resting or keep moving while in motion

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7
Q

newtons second law

A

A=F/M

To move an object of mass(M) you will need a force (F)

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8
Q

if mass increases what force do you need to move it

A

force needs to increase

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9
Q

newtons third law

A

for every action there is an equal and opposite reaction

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10
Q

if an object is traveling at a constant velocity which two forces will be equal

A

applied and frictional force

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11
Q

what unit is weight measured in

A

Newtons(N)

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12
Q

force

A

any push or pull on an object

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13
Q

What is a newton equal to

A

kg•m/sec/sec (kg•m/s^2)

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14
Q

sum of all forces

A

net force

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15
Q

displacement

A

distance and direction of an objects change in position from a starting point

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16
Q

Velocity

A

the change in distance over a measured time frame

17
Q

acceleration

A

the change in velocity by increasing or decreasing in speed over time

18
Q

speed

A

the rate at which an object moves