Mechanics Flashcards
0
Q
How is speed different to velocity ?
A
Velocity must have direction specified as well as how fast something is going.
1
Q
What are speed and velocity measured in ?
A
m/s
2
Q
In a distance time graph what is a flat section ?
A
Stationary.
3
Q
Straight up or down hills mean something is traveling at a ….. Speed ?
A
Steady.
4
Q
What is weight and what is it measured in ?
A
A force measured in newtons.
5
Q
What is braking distance ?
A
Distance travelled while braking.
6
Q
What is thinking distance ?
A
Distance travelled in time it takes from seeing the hazard to applying the brakes.
7
Q
What affects the thinking distance ?
A
Speed of vehicle
Reaction time
8
Q
What is the momentum of an object ?
A
Mass x velocity = momentum
(Kg) (m/s) (Kg m/s)
9
Q
What is the total momentum before always ?
A
Zero
