CP2-Forces And Motion

Question 1

What is a scalar quantity?

Answer 1

It has a magnitude but no direction

Question 2

What is a vector quantity?

Answer 2

It has a magnitude and direction

Question 3

Is displacement a scalar or vector?

Answer 3

Vector

Question 4

Is distance a scalar or vector?

Answer 4

Scalar

Question 5

Is velocity a scalar or vector?

Answer 5

Vector

Question 6

Is speed a scalar or vector?

Answer 6

Scalar

Question 7

Is acceleration a scalar or vector?

Answer 7

Vector

Question 8

Is force a scalar or vector?

Answer 8

Vector

Question 9

Is weight a scalar or vector?

Answer 9

Vector

Question 10

Is mass a scalar or vector?

Answer 10

Scalar

Question 11

Is momentum a scalar or vector?

Answer 11

Vector

Question 12

Is energy a scalar or vector?

Answer 12

Scalar

Question 13

What is velocity?

Answer 13

Speed in a stated direction

Question 14

What is the equation for distance?

Answer 14

Speedxtime

Question 15

What is the equation for acceleration?

Answer 15

Change in velocity/total time taken

Question 16

What is Newton’s first law?

Answer 16

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

Question 17

What is Newton’s second law?

Answer 17

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

Question 18

What is weight?

Answer 18

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

Question 19

How is weight measured?

Answer 19

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

Question 20

What is the equation for weight?

Answer 20

Mass x gravitational field strength

Question 21

What is mass?

Answer 21

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

Question 22

How is mass measured?

Answer 22

Mass is a scalar and is measured in Kg

Question 23

What is Newton’s 3rd law?

Answer 23

For every action is an equal and opposite reaction

Question 24

What is circular motion?

Answer 24

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

Question 25

What is centripetal force?

Answer 25

A force which acts on a body moving in a circular path and is detected towards the centre around which the body is moving

Question 26

What is the typical human reaction time?

Answer 26

0.20-0.25 Seconds

Question 27

What are the 5 factors that influence Human reaction times?

Answer 27

Tiredness, distractions, alcohol, drugs, age

Question 28

What is thinking distance?

Answer 28

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

Question 29

What is braking distance?

Answer 29

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

Question 30

What are factors that influence braking distance?

Answer 30

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

Question 31

What is stopping distance?

Answer 31

Thinking distance+braking distance