Motion Flashcards
What is the equation for speed
Speed = distance/ time
What is acceleration
Increasing velocity with time
How do we calculate acceleration
Acceleration = change in velocity/ time taken for change
What is the unit for acceleration
m/s^2
What do displacement time graphs show
An objects position compared to it starting point over time
What is the object doing if the line on a displacement time graph is horizontal
The object is stationary as the gradient on he graph is 0 and displacement does not change over time
What is the object doing if the line on a displacement time graph is steep and a straight line going upwards
The object is moving fast at a constant speed as it is covering lots of distance at a short time
What is the object doing if the line on a displacement time graph is going down
It has a negative gradient so the object is returning back to its starting point and travelling backwards
What is the object doing if the line on a displacement time graph is curving upwards
The object is accelerating as the distance travelled every second increases with time so it is increasing its speed
What is the object doing if the line on a displacement time graph is curving downwards
The object is decelerating as the distance travelled every second decreases with time so it is decreasing its speed
Which force causes a trolley going down a ramp to accelerate
Gravity
What is the object doing if the line on a velocity time graph is a straight line going upwards
The object is accelerating as velocity is increasing with time
What is a velocity time graph
A motion graph which shows how the velocity of an object changes over time
What is the object doing if the line on a velocity time graph is horizontal
The object is moving at a constant speed as the velocity does not change with time
What is the object doing if the line on a velocity time graph is going downwards
The object is decelerating as the velocity is decreasing with time
