Distance-Time Graph
Speed-Time Graph
Speed
Acceleration
Forces
Chemical Reactions
100
What does a straight, upward diagonal line on a distance-time graph represent?
Constant speed
100
What does a straight, upward diagonal line represent on a speed-time graph?
Accelerating/getting faster
100
What is the unit for speed?
ms-1
100
What is the unit for acceleration?
ms-2
100
What is the unit for force?
Newton (N)
100
What does the arrow in a word equation mean?
Produce
200
What does a upward curved line on a distance-time graph represent?
Accelerating/getting faster
200
What does a straight, horizontal line on a speed-time graph represent?
Constant speed
200
What is the formula for calculating speed?
v=d/t
200
What is the formula for calculating acceleration?
a=v/t
200
Draw a car.
Put the following forces, with correct arrows, onto the diagram below: THRUST, FRICTION (Drag), WEIGHT, SUPPORT.
Mr Brown will draw it on board
200
Name one way to protect an object from rusting
Any ONE of galvanising/sacrificial metals/painting/plastic coating
300
How far, in metres, did the object travel in the first 6 seconds of its journey?
5 m
300
In this speed-time graph, what was the maximum speed reached? Show units
3 ms-1
300
Rearrange the speed formula so that you are solving for time.
v=d/t
Feel free to use the formula triangle to help
t=d/v
300
Rearrange the speed formula so that you are solving for time.
a=v/t
Feel free to use the formula triangle to help
t=v/a
300
What is the size & direction of the unbalanced force?
Bonus: what is the motion of the car?
10 N to the right (thrust)
Bonus: Accelerating
300
Write down the WORD EQUATION for the reaction between iron and oxygen.
iron + oxygen --> iron oxide
400
What quantity does the gradient of a distance-time graph equal?
Speed
Gradient = (Rise)/(Run)
v = (/_\ d)/(/_\t)
400
What quantity does the gradient of a speed-time graph equal?
Acceleration
Gradient = (Rise)/(Run)
a = (/_\ v)/(/_\t)
400
What is the speed of an object that travels 3,500 m in 70 s. Show unit and working
v=d/t
v=3500/70
v=50 ms^-1
400
Calculate the change in speed from a dog that goes from running 10 ms-1 to 6 ms-1
/_\v = 6-10 = -4 ms^-1
400
A sprinter has a mass of 75 kg and has a thrust force of 375 N. What is the sprinter's acceleration?
a=F/m
a=375/75
a=5 ms^-2
400
Complete the word equation:
Calcium + Hydrochloric Acid --> _____ Chloride + H_______
Calcium + Hydrochloric Acid --> Calcium Chloride + Hydrogen
500
Calculate the average speed of the journey shown in the distance-time graph below.
You will need to convert the units from km to m and from minutes 
to seconds
v=(/_\ d)/(/_\ t)
v = (9,000 km)/(1,080 s)
v = 8.3 ms^-1
500
Using the gradient formula, what is the acceleration travelled over the first 4 seconds. Show correct units
Gradient = (Rise)/(Run)
a=(/_\ v)/(/_\ t)
a = (4 ms^-1)/(4s)
a = 1 ms^-2
500
If a car is travelling at 12 ms-1, it can cover 6 km. How long did the car travel for? (show your working)
t=d/v
t=6000/12
t=500 s
500
A ship changes its speed from 18 ms-1 to 12 ms-1, which takes 3 s. What was the ship's acceleration during this time? (show your working).
Note: start with calculating the change in the speed
/_\ v = 12- 18 = -6 ms^-1
a = v/t
a = -6/3
a = -2 ms^-2
500
The four forces acting on a car add together to give a net force of zero.
Explain why a net force of zero would result in the car moving at a constant speed.
Note: Think of Newton's First Law
Newton’s Law 1: If all forces are added and equal zero, no change in speed.
500
Complete the word equation:
Sodium+ Water --> _____ hydroxide + H_______
Sodium+ Water --> Sodium Hydroxide +Hydrogen