Motion Flashcards
How do we calculate speed
Speed= distance divided by time
What does the gradient on a distance line graph represent?
Speed
What is the speed of a runner who covers 400m in 50s?
8m/s
Velocity of an object
It’s speed in a given direction
What is the difference between speed and velocity
Velocity of an object is it’s speed in a given direction
Speed is the distance travelled each second
How do you calculate acceleration
Acceleration= final velocity - initial velocity divided by time
If the value calculated for acceleration is negative what does this mean
Means that the object is slowing down - deceleration/negative acceleration
Acceleration
The change of velocity per second
What does a velocity time graph show
Velocity of an object
On a velocity time graph what does the gradient of the line represent
Represents acceleration
What does a horizontal line on a velocity time graph represent
Acceleration is 0 travelling at a steady speed
What quantity has the unit m/s^2?
Unit of acceleration
