newtons laws Flashcards

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1
Q

What has more inertia a freight train or car

A

freight train

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2
Q

What has more inertia a ping pong ball or a baseball

A

Baseball

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3
Q

What has more inertia a fast moving bowling ball or slow bowling ball

A

fast moving bowling ball

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4
Q

What has more inertia a rock on earth or a rock in space

A

Rock on earth

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5
Q

What has more inertia a fast baseball or bowling ball at rest

A

Boeling ball at rest

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6
Q

What is force

A

Change in direction, or velocity increase or decrease

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7
Q

Units of force

A

Newtons

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8
Q

Units of weight

A

Newtons

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9
Q

Unit of mass

A

Kilograms

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10
Q

Unit for acceleration

A

M/S2

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11
Q

A baseball player hits a ball. Which is greater: the force of the bat on the ball or the force of the ball on the bat? What happens to the bat and the ball

A

Becomes equal and opposite

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12
Q

Newtons 1st law states

A

Object will remain at rest until acted upon by an outside force

Will continure to move until acted upon by an outside force

Wont move until acted upon by a force

Will move in straight line until acted upon by another force

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13
Q

Law of Inertia applies to

A

moving and non moving objects

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14
Q

After a cannonball is fired into frictionless space, the amount of force needed to keep it going is…

A

Zero, no force is nessesary

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15
Q

A sheet of paper can be withdrawn from under a container of milk wothout toppoling it, if paper is jerked away quickly the resason this can be done is that

A

The carton has inertia

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16
Q

One object has twice as much mass as another object, the 1st object also has twice as much

A

inertia

17
Q

compared to its weight on earth, a 50 kg object on the moon will weigh

A

less

18
Q

The mass of a dog that weighs 100 N is about … (kg)

A

10 kg

19
Q

An object following a straight line path at a constant speed

A

must have zerohas zero acceleration

20
Q

Acceleration due to gravity is the slope for what type of graph

A

Force vs Velocity

21
Q

You would have a larger mass of gold if your chunk of gold weighed 1N on the ____

A

moon
on moon g=1.67

22
Q

Equalibrium occours when

A

All forces acting rightword equal sum of forces acting leftward

23
Q

What has more mass, a kg of feathers of kg or iron

A

They have same mass

24
Q

Acceleration is produced by

A

Forces

25
Q

According to newtons 2nd law, the acceleration of an object is ____ its mass

A

directily proportional

26
Q

Acceleration produced by net force on object is

A
  • proportional to magnitude of NF
  • Same direction of NF
    -Inversly proportional to mass
27
Q

An object has a cconstant mass. A constant force on obkect produces constant

A

Velocity and acceleration

28
Q

Weight is equal to

A

Force due to gravity

29
Q

A tennis ball and solid steel ball the same size are dropped at same time. What ball has the greater force acting upon it

A

Steel Ball

30
Q

Action Reaction forces occour in

A

pairs on the same object