Chem And Road Safety Flashcards
Speed = ?
Distance over time
What is Newton’s First Law
An objects tendency to maintain its motion. This means it does not want to speed up, slow down or change directions
An object will maintain its motion unless acted upon by an unbalanced force
What is Newton’s second law
F=ma
Force = mass x acceleration
What is force measured in
Newton’s (N)
What does a head rest do
Head tests are there to prevent whiplash as inertia causes your head to stay behind and your body continues to move
What do seatbelts do
Seatbelts overcome inertia to prevent you from moving and hitting the window
How many seconds in an hour
3600 seconds
Distance = ?
D= st Distance = speed x time
Time = ?
D over s
Distance divided by speed
What is Newton’s third law
For every action there is an equal and opposite reaction
What are the indicators of a chemical reaction
Bubbles, colour change, temp change , light production, smell, precipitation
What is a non example of a chemical reaction
Mixing two coloured paints together / bubbles in boiling water
Metal + acid —-> ?
Acid + metal —-> salt + hydrogen
Acid + carbonate —-> ?
Acid + carbonate —-> salt + water + carbon dioxide
What is the dependant variable
The variable that changes due to the independent variable
