Describing Motion Flashcards
Learning about physics (15 cards)
What is the SI unit for speed?
m/s
Speed is commonly measured in meters per second (m/s) in scientific contexts.
What is the formula to calculate speed?
v = d/t
Where v is speed, d is distance, and t is time.
What is average speed?
A measure of how fast something moves overall
It is calculated as total distance divided by total time.
What is instantaneous speed?
Your speed at a particular instant
This can be measured using a speedometer.
How do you convert speed from km/h to m/s?
By using conversion factors
Typically, divide the speed in km/h by 3.6 to get m/s.
What does a distance-time graph show?
How far an object travels as time progresses
It visualizes the relationship between distance and time.
What does a steep slope on a distance-time graph indicate?
The object is moving fast
A steeper slope means greater distance covered over the same time interval.
What does a flat line on a distance-time graph indicate?
Motion has stopped
This shows no change in distance over time.
What does the gradient of a distance-time graph represent?
The object’s average speed over a time interval
The steeper the gradient, the faster the object is moving.
What does a speed-time graph show?
An object’s speed changes over time
It illustrates how speed varies with time.
What does a flat line on a speed-time graph indicate?
Constant speed
The object is moving at a steady pace.
What does a rising graph on a speed-time graph indicate?
Speed is increasing
The object is accelerating.
What does a falling graph on a speed-time graph indicate?
Speed is decreasing
The object is decelerating.
What does the area below a speed-time graph represent?
The distance the object has travelled up to a given point
This is calculated by finding the area under the graph.
What does the slope of speed-time graphs represent?
Acceleration
A steeper slope indicates greater acceleration.
