Motion Flashcards
What is the definition of speed?
Speed is how fast an object travels from one point to the other
How do you calculate the speed of an object?
Distance / time
What is the standard units of speed?
M/s ( metres per second )
What is velocity?
Speed in a given direction
How do you calculate velocity?
Distance in a given direction/ time
What matters for velocity, that doesn’t matter for speed?
Direction matters
What is acceleration?
When an object is changing its velocity , it is said to be accelerating
What does acceleration tell us?
How fast an object happens
How do you calculate the acceleration?
Change in velocity/ time taken
What are the units for acceleration?
M/s2 ( meters per second squared
Do all bodies fall with the same acceleration? What is the speed the each fall at?
10m/s2
What slows down bodies?
Air resistance slows down bodies, on Earth
What is terminal velocity?
The faster you go, the greater the air resistance until you can no longer accelerate and achieve a consistent velocity called terminal velocity
