CP2-Forces And Motion Flashcards

1
Q

What is a scalar quantity?

A

It has a magnitude but no direction

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2
Q

What is a vector quantity?

A

It has a magnitude and direction

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3
Q

Is displacement a scalar or vector?

A

Vector

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4
Q

Is distance a scalar or vector?

A

Scalar

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5
Q

Is velocity a scalar or vector?

A

Vector

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6
Q

Is speed a scalar or vector?

A

Scalar

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7
Q

Is acceleration a scalar or vector?

A

Vector

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8
Q

Is force a scalar or vector?

A

Vector

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9
Q

Is weight a scalar or vector?

A

Vector

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10
Q

Is mass a scalar or vector?

A

Scalar

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11
Q

Is momentum a scalar or vector?

A

Vector

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12
Q

Is energy a scalar or vector?

A

Scalar

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13
Q

What is velocity?

A

Speed in a stated direction

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14
Q

What is the equation for distance?

A

Speedxtime

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15
Q

What is the equation for acceleration?

A

Change in velocity/total time taken

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16
Q

What is Newton’s first law?

A

A body will remain at rest or continue in a straight line at a constant speed as long as the forces acting on it are balanced

17
Q

What is Newton’s second law?

A

When a resultant force acts on a mass then there will be a change in its velocity. The resultant force determines the size and direction of the subsequent acceleration of the mass

18
Q

What is weight?

A

The force a body experiences due to its mass and size of the gravitational field it is in (Earth in 10N/Kg)

19
Q

How is weight measured?

A

Weight is a vector and is measured in Newton’s using a Newton meter

20
Q

What is the equation for weight?

A

Mass x gravitational field strength

21
Q

What is mass?

A

A measure of the amount of matter that is contained within a 3D space. It is not affected by the size of the gravitational field strength it is in

22
Q

How is mass measured?

A

Mass is a scalar and is measured in Kg

23
Q

What is Newton’s 3rd law?

A

For every action is an equal and opposite reaction

24
Q

What is circular motion?

A

A body will move in a circular path if it’s motion is at right angles to a force that acts inwards along the radius of the path

25
What is centripetal force?
A force which acts on a body moving in a circular path and is detected towards the centre around which the body is moving
26
What is the typical human reaction time?
0.20-0.25 Seconds
27
What are the 5 factors that influence Human reaction times?
Tiredness, distractions, alcohol, drugs, age
28
What is thinking distance?
The distance the car travels while the driver reacts to the danger and applies the brakes
29
What is braking distance?
The distance the car travels while it is slowing down once the brakes have been applied
30
What are factors that influence braking distance?
Friction between the tyres and road decreases when the road is icy or wet, the brakes and/or tyres are worn, the mass of the car is big
31
What is stopping distance?
Thinking distance+braking distance