Motion Graphs Flashcards
In a velocity/time Graph explain what the gradient means
The gradient of a velocity time graph is equal to the acceleration of the object
How can you work out the average speed on a Graph
Average speed = total distance/total time
What is the equation for acceleration
Acceleration = change in velocity/Time for change
A= V - u / t. Where v= final velocity and u = initial velocity
What are scalar quantities
Quantities that have magnitude and size only E.g. temperature, distance, time, speed and mass
What are vectors
Quantities that have magnitude and direction E.g. velocity, weight and force
What is Newton’s first law
Objects will remain at rest or continue to move at a constant speed unless acted upon by a resultant force
What is newtons second law
Resultant force is directly promotional to the rate of change of momentum
F proportional (fish symbol) mc-my/t
Where f= resultant force, mv = final momentum and mu= initial momentum
Or resultant force = mass x acceleration
In a distance/time graph, explain what the gradient means
The gradient of a distance time graph is equal to the speed of the object
How do you work out the resultant force
Resultant force=mass x acceleration
What is the thinking distance
The distance travelled while the driver is reacting
What is breaking distance
The distance the car travels while the brakes are being applied until it stops
What is stopping distance
Thinking + Braking
