# CP2-Forces And Motion Flashcards Preview

## Combined Science Edexcel Physics > CP2-Forces And Motion > Flashcards

Flashcards in CP2-Forces And Motion Deck (31)
1
Q

What is a scalar quantity?

A

It has a magnitude but no direction

2
Q

What is a vector quantity?

A

It has a magnitude and direction

3
Q

Is displacement a scalar or vector?

A

Vector

4
Q

Is distance a scalar or vector?

A

Scalar

5
Q

Is velocity a scalar or vector?

A

Vector

6
Q

Is speed a scalar or vector?

A

Scalar

7
Q

Is acceleration a scalar or vector?

A

Vector

8
Q

Is force a scalar or vector?

A

Vector

9
Q

Is weight a scalar or vector?

A

Vector

10
Q

Is mass a scalar or vector?

A

Scalar

11
Q

Is momentum a scalar or vector?

A

Vector

12
Q

Is energy a scalar or vector?

A

Scalar

13
Q

What is velocity?

A

Speed in a stated direction

14
Q

What is the equation for distance?

A

Speedxtime

15
Q

What is the equation for acceleration?

A

Change in velocity/total time taken

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
Q

What is centripetal force?

A

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
Q

What is the typical human reaction time?

A

0.20-0.25 Seconds

27
Q

What are the 5 factors that influence Human reaction times?

A

Tiredness, distractions, alcohol, drugs, age

28
Q

What is thinking distance?

A

The distance the car travels while the driver reacts to the danger and applies the brakes

29
Q

What is braking distance?

A

The distance the car travels while it is slowing down once the brakes have been applied

30
Q

What are factors that influence braking distance?

A

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
Q

What is stopping distance?

A

Thinking distance+braking distance