Forces And Motion Flashcards
What does the line of a distance time graph represent ?
The speed
Whats the equation for speed , distance and time
Speed x time
In a distance time graph where does the distance and time go on the axis
Distance on the y
Time on the x
How do you find out the gradient ?
Change in x
What is displacement ?
The vector equivalent to distace
Whats the equation for acceleration
Acceleration x time taken
What are scalar and vector quantities ?
Scalar - speed - no specific direction
Vector - velocity - given direction
On a velocity time graph what goes on which axis
Velocity on y
Time on x
What is the line in a velocity time graph ?
Acceleration
What is the distance under the graph in a velocity time graph ?
Distance travelled
Whats the equation for force mass and acceleration
Force = mass x acceleration
Whats the equation for mass , weight and gravitational force ?
Mass x g
What are the two forces affecting something falling down
Gravity
Frictional force
What is terminal velocity ?
When the frictional force pulling up on an object is equal to gravity pulling it down
⬆️drag force ? ⬇️gravity
What makes the overall stopping distance ?
Its the sum of the thinking distance and braking distance
What is the thinking distance ?
The distance you travel while you are thinking about putting your foot on the brake
What is the braking distance ?
The distance you have travelled once you have applied the brakes
What could affect your reaction time ?
Age , eye sight , tiredness , alcohol
If the speed is higher how will this effect the braking distance ?
The breaking distance is higher
If the braking force is smaller (the brakes arent fully effective )how will this effect the breaking distance
Larger breaking distance
