Forces

Question 1

Distance

Answer 1

The length of a path between two points

Question 2

Meter

Answer 2

A lenght of measure, used to describe how fast something or someone is going

Question 3

Centimetre

Answer 3

A lenght of measure, used to describe how fast something or someone is going(smaller than meters)

Question 4

Kilometers

Answer 4

A lenght in measure and its to describe how fast something is going in a distance

Question 5

Time

Answer 5

Seconds,minutes,hours

Question 6

Seconds

Answer 6

Measurement in time

Question 7

Minutes

Answer 7

Measurement in time

Question 8

Hours

Answer 8

Measurement in time

Question 9

Speed

Answer 9

Measurement of how fast someone or something is going

Question 10

M/s, cm/s, km/hr

Answer 10

Measurement of time for how fast something is going. It is also the answer to how far and how long it to something or someone.

Question 11

Displacement

Answer 11

Distance and direction of an object’s change in position from the starting point.

Question 12

Distance vs. time graph

Answer 12

Shows the distance an object travels in a certain amount of time.

Question 13

Slope

Answer 13

The steepness of a line on a graph

Question 14

Average

Answer 14

The average of a value

Question 15

Independent variable

Answer 15

The experimental factor that is manipulated; the variable whose effect is being studied

Question 16

Dependent variable

Answer 16

The outcome factor; the variable that may change in response to manipulations of the independent variable.

Question 17

Constant variable

Answer 17

The variable that doesn’t change

Question 18

Acceleration

Answer 18

The rate at which velocity changes

Question 19

average speed

Answer 19

total distance divided by total of time

Question 20

average speed equation

Answer 20

distance/time=speed

Question 21

instantaneous speed

Answer 21

the speed of an object at one instant time

Question 22

caption

Answer 22

a few descriptive words providing readers with information regarding a figure, table, or equation.

Question 23

scatter plot

Answer 23

a graph with point plotted to show a possible relationship between two sets of data

Question 24

trend-line

Answer 24

growth path the economy would follow if it were not interrupted by alternating periods of recession and recovery

Question 25

constant speed

Answer 25

speed that does not change

Question 26

changing speed

Answer 26

when the objects speed changes per unit of time

Question 27

example of distance units

Answer 27

cm,meters,km

Question 28

example of time units

Answer 28

second, minutes, hours

Question 29

example of speed units

Answer 29

M/s, cm/s and km/h

Question 30

example of a constant speed

Answer 30

-A person walking at the same speed
-a horse walking at the same speed,
-a car driving exactly the speed limit.

Question 31

example of a zero slope

Answer 31

no movement

Question 32

example of acceleration

Answer 32

a boulder rolling down a hill faster

Question 33

example of deceleration

Answer 33

a car approaching a red light

Question 34

in a distance time graph the x axis should be

Answer 34

time

Question 35

in a distance time graph the y axis should be

Answer 35

distance

Question 36

Why do we find the average speed instead of a instantaneous speed

Answer 36

It is nearly impossible to find the instantaneous speed because speed is always changing in nano seconds, which is a pain to figure out

Question 37

What logic do you use when you are looking at a graph that has two constant speeds and the question is asking you what speed is going faster?

Answer 37

You look for the speed that’s slope is steeper

Question 38

If a curved line on a graph is facing up what direction is the speed going?

Answer 38

its going up

Question 39

If a curved line on a graph is facing up then curving and pointing down, what direction is the speed going

Answer 39

it is acceleration and the decreasing slowly

Question 40

in order for scientist to agree in measurements of motion they must first agree on

Answer 40

frame of reference

Question 41

for day to day objects, motions are usually measured relative to

Answer 41

the surface of the earth

Question 42

what is average speed

Answer 42

the speed over the entire trip

Question 43

what is velocity

Answer 43

speed in a given direction

Question 44

what is acceleration

Answer 44

the rate of change of speed

Question 45

velocity is defined with both —- and —–

Answer 45

speed and direction

Question 46

what is the speed formula

Answer 46

distance/time

Question 47

what does the slope on a distance vs. time graph represent

Answer 47

speed

Question 48

what is the importance of 9.8 meters per second squared

Answer 48

it is acceleration due to gravity on earth

Question 49

this is the term for the rate at which velocity changes over time

Answer 49

acceleration

Question 50

what does a horizontal line on a velocity vs. time graph represent

Answer 50

a constant velocity

Question 51

a curved line on a distance vs. time graph indicates

Answer 51

a change in speed

Question 52

graph showing object stopped

Answer 52

horizontal line

Question 53

graph showing acceleration

Answer 53

curves upwards

Question 54

graph showing constant acceleration

Answer 54

diagonal line going upwards

Question 55

speed

Answer 55

distance divided by time

Question 56

3 ways to accelerate

Answer 56

speed up, slow down, change direction

Question 57

does the mass of objects ever change

Answer 57

no

Question 58

what is inertia

Answer 58

how difficult it is to change the objects motion

Question 59

an object with high mass or low mass

Answer 59

the object has high or low inertia

Question 60

equation for weight

Answer 60

weight(w)=mass(m)x gravitational field strength (g)

Question 61

weight is measured in

Answer 61

newtons

Question 62

mass is measured in

Answer 62

kg

Question 63

does force affect acceleration

Answer 63

yes

Question 64

what is acceleration used for

Answer 64

to change in speed, direction or a change in both speed and direction

Question 65

what is a resultant force

Answer 65

the overall force action on an object

Question 66

what is caused by a resultant force

Answer 66

the change in an objects motion

Question 67

how to know if a resultant force is acting on an object

Answer 67

If the forces acting on an object are unbalanced (not equal) it means that a resultant force is acting on the object.

Question 68

resultant force equation

Answer 68

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

Question 69

what is newtons second law

Answer 69

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

Question 70

what is newtons 1st law

Answer 70

Newton’s 1st Law says that the velocity of an object will only change if a resultant force is acting on the object. This applies to a stationary (still) or moving object.

Question 71

if the object has no resultant force what does that mean

Answer 71

if an objects is stationary and there is no resultant force acting on it it will stay stationary.

Question 72

how to change velocity of an object

Answer 72

the velocity will only change if a resultant force is acting on the object

Question 73

what is newtons 3rd law

Answer 73

for every action there is an equal and opposite reaction

Question 74

examples of newtons 3rd law

Answer 74

If a hand pushes on a table, the table will push back on the hand with an equal force, but in the opposite direction.

Question 75

calculating resultant force

Answer 75

Resultant force = forces acting in one direction - forces acting in the opposite direction.

Question 76

newtons 1st law eg

Answer 76

When a vehicle is travelling at a steady speed, the resistive forces (such as friction and air resistance) are balancing the driving force.
When there are balanced forces, there is no resultant force.

Question 77

what are the forces acting on a driving car

Answer 77

gravity, friction, driving force contact force

Question 78

forces acting on skydiver

Answer 78

gravity, air resistance

Question 79

weight of an object

Answer 79

The weight of an object is the force that acts downwards on an object due to gravity.

Question 80

what is air resistance

Answer 80

air resistance is a frictional force that opposes the motion of objects moving quickly through air.

Question 81

terminal velocity

Answer 81

the maximum velocity an object can reach while falling

Question 82

stopping distance

Answer 82

stopping distance is the distance it takes a car to stop in an emergency

Question 83

how to find stopping distance

Answer 83

thinking distance+ braking distance

Question 84

thinking distance

Answer 84

how far the car travels during the drivers reaction time

Question 85

what is braking distance

Answer 85

the distance the car travels between the driver applying the brakes and the car stopping

Question 86

eg of factors affecting thinking distance

Answer 86

tiredness, drunk,distractions

Question 87

factors affecting braking distance

Answer 87

cars initial speed, condition of the car, road condition(wet or icy)

Question 88

how does speed affect work done

Answer 88

The greater the speed of a vehicle, the greater the braking force needed to stop the vehicle in a certain distance.

Question 89

Examples of what affects work done

Answer 89

Speed of the car
Bigger the mass the greater breaking force needed
Grip of the vehicle