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Acdamic Comeback > Science Forces > Flashcards

Science Forces Flashcards

1
Q

What does mass mean

A

An object mass is due to amount of matter it contains

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2
Q

Weight means

A

It’s a force caused by gravity pulling on a object mass

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3
Q

What are the units of the force

A

Newtons

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4
Q

What are the units of gravitational field strength

A

N/kg

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5
Q

What is scalar

A

Describe its size

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6
Q

What is a vector

A

Size and direction

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7
Q

Vector quantities example

A

Force , velocity and acceleration

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8
Q

Scalar quantities examples

A

Speed distance mass and temperature and time

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9
Q

All the forces

A

Up thrust
Gravitational Force.
Normal Force.
Frictional Force.
Air Resistance Force.
Tension Force.
Spring Force
Electrostatic force
Magnetic

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10
Q

What are the units of work done

A

Jules

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11
Q

What is work done

A

Energy transfers

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12
Q

What are the difference between a distance graph and a vector graph

A

In a distance graph the distance is on a y axis. And time on a x axis’s

On a velocity graph the speed is on the y axis and time on the x axis

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13
Q

What is a resultant force

A

A single force which replaces several other forces

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14
Q

How to work out resultant force

A

Subtract one side by another

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15
Q

What is hooks law

A

The extension of an elastic object is proportional to the force applied to the object

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16
Q

Velocity is what quantity

A

Vector

17
Q

What is braking distance

A

The distance traveled by a vehicle once the brakes are applied

18
Q

What effects braking distance

A

Adverse weather conditions

Poor vehicle conditions

19
Q

What is Newton’s first law

A

If the resultant force acting on a object is 0

20
Q

Newton second law

A

The acceleration of an object is proportional to the resultant force acting on it and inversely proportional to the mass of the object

21
Q

Newton 3 law

A

When two objects interact, the forces acting on one another is always equal and opposite

22
Q

Stoping time equals to

A

Thinking distance + braking distance

23
Q

Reaction time affected by

A

Tiredness
Drugs
Alcohol
Distraction

24
Q

Contact forces

A

Two objects are physically touching

25
Q

Example of contact forces

A

Tension
Friction
Air resistance
Normal

26
Q

What is a non contact force

A

Two objects that’s physically separated

27
Q

Example of non contact force

A

Gravitational force
Electrostatic force
Magnetic force

Acdamic Comeback (16 decks)

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