newtons laws Flashcards

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A sheet of paper can be withdrawn from under a container of milk wothout toppoling it, if paper is jerked away quickly the resason this can be done is that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

17
Q

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

18
Q

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

25
According to newtons 2nd law, the acceleration of an object is ____ its mass
directily proportional
26
Acceleration produced by net force on object is
- proportional to magnitude of NF - Same direction of NF -Inversly proportional to mass
27
An object has a cconstant mass. A constant force on obkect produces constant
Velocity and acceleration
28
Weight is equal to
Force due to gravity
29
A tennis ball and solid steel ball the same size are dropped at same time. What ball has the greater force acting upon it
Steel Ball
30
Action Reaction forces occour in
pairs on the same object