Forces Flashcards

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1
Q

What is a force

A

Something that changes the direction, shape or speed of an object

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2
Q

What are the two types of forces

A

Contact and non-contact forces

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3
Q

What does gravity do

A

Pulls objects to the centre of the earth

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4
Q

What does air resistance do

A

It works in the opposite to movement

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5
Q

What is the other name for air resistance

A

Drag

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6
Q

How do you reduce drag

A

Smooth the surface, lubricate it or make it more streamlined

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7
Q

Is friction a contact or non-contact force

A

It is a contact force

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8
Q

How do you reduce friction

A

Smoothing the surfaces or lubricating them

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9
Q

Does mass or weight remain constant

A

Mass remains constant and weight changes depending on then gravitational field

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10
Q

What is weight measured in

A

Newtons

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11
Q

What is mass measured in

A

Kilograms

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12
Q

What is mass

A

How much matter something is

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13
Q

What is weight

A

The force of gravity on a mass

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14
Q

What is a resultant force

A

The overall force acting on an object

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15
Q

If a box is being pushed 23N to the left and 37N to the right what is the resultant force

A

14N to the right

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