Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
graphs and motion
distance / displacement / velocity - time graphs, equations of motion
| Term | Definition |
|---|---|
| distance - time graph descriptions at a given point in time | The height of line - the distance travelled by an object (can only be positive as distance is a scalar) The gradient - the speed of the object (linear = constant speed) |
| displacement - time graph descriptions at a given point in time | the height of the line - the displacement of the object relative to the chosen starting point (pos means to be in 1 direction relative to the point, neg means to be in the other direction) the gradient - the velocity of the object |
| velocity - time graph descriptions at a given point in time | The height of the line - the velocity of the object (pos means moving in 1 direction, neg means moving in the other) the gradient - the acceleration of the object (linear = constant acceleration) the area under the curve - the distance travelled |
| SUVAT equations | S - displacement U - initial velocity V - final velocity A - acceleration T - time These are used to model motion |
| derivation of the equations of motion | Analysing velocity - time graphs |
| modelling free fall | Using SUVAT, where the acceleration is g (9.81 for OCR A) |
| standard rules of free fall / projectile motion | - assume no air resistance / other forces - assume the issue can be modelled as a particle - assume that the vertical information provides better insight into the problem |
| projectile motion | using SUVAT in the horizontal and vertical directions, where only time is shared between the two |
| velocities if angles are used (full body diagrams) | the horizontal initial velocity is total velocity x cos(angle) the vertical initial velocity is total velocity x sin(angle) the final horizontal velocity is the same as the initial the final vertical velocity is the negation of the initial velocity |
| full body vs half body diagrams | full body - describing the problem from the start to when the object reaches the ground half body - describing the problem from the start to the turning point both are valid approaches because the arc formed is parabolic |
| scalars and vectors | distance, speeds and time are scalars (only have magnitude) displacement, velocity and acceleration are vectors (magnitude and direction) |
Created by:
That cool NAMe
Popular Physics sets