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1

state the two things acceleration is dependent on

mass of the object

resultant force acting on object

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2

explain how to describe a graph showing acceleration and resultant force are directly proportional

straight line

constant positive gradient

through the origin

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3

state what the relationship between acceleration and resultant force is

directly proportional

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4

explain how to describe a graph showing acceleration and mass are inversely proportional

curve

decreasing negative gradient

not through the origin

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5

state the relationship between acceleration and mass

inversely proportional

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6

state the equation of newton’s second law

F (force) = m (mass) x a (acceleration)

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7

state what newton’s first law is

an object will remain at rest or constant velocity

unless there is an unbalanced resultant force acting on it

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8

state what the implications of newton’s first law are

force causes CHANGES in motion

forces aren’t required to keep motion going

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9

QUESTION: describe the effect of the resultant force acting forward on a car moving forward

the resultant force causes the car to accelerate forwards

in the same direction and motion as the resultant force

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10

QUESTION: describe the effect of the resultant force acting to the right on a car moving forward

car turns right

speed remains constant

velocity changes as car changes direction

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11

state what force causes the circular motion of the earth

weight of the earth

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12

state what centripetal force is

force that causes circular motion

acts inwards in a circle

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13

state the equation to find kinetic energy

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14

state what the term ‘work done’ means

transfer of energy

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15

describe the energy transfer process as a vehicle slows down

energy transferred from kinetic energy store of car

to thermal energy store of brakes

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16

state the equation to find the initial velocity of an object in motion

(initial velocity)² = (final velocity)² + 2 (acceleration x distance)

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17

state how to calculate stopping distance

stopping distance = reaction distance + braking distance

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18

state the relationship between thinking distance and speed

directly proportional

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19

state how to calculate thinking distance

thinking distance = speed x reaction time

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20

state what factors affect thinking distance

speed of vehicle

reaction speed

cognitive function of driver

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21

state the relationship between braking distance and speed

proportional (increases as the other increases) but not linear

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22

state what factors affect braking distance

braking force from brakes

condition of road surface

mass of vehicle

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23

explain how the braking force of brakes affects braking distance

type and condition of brakes impacts braking distance

as brakes that are worn create less friction

causing the car to need a larger distance to break fully

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24

explain why the condition of the road surface affects braking distance

water or loose materials on surface reduces friction

which increases braking distance

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25

state what principle the term constant velocity can be related to

newton’s first law

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26

state what no resultant force on an object means

object is stationary or at a constant velocity

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27

state what the term constant motion means

same speed

same direction

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28

state what newton’s second law is

unbalanced forces cause acceleration

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29

state what the term acceleration means

change in speed OR direction

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30

state what braking force can also be known as

acceleration acting backwards

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31

state the tonne to kilogram conversion

1 tonne = 1000 kilogram

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