Speed
What is speed?
It's how fast an object moves or changes position.
Velocity measures a change in position with time.
What does a downward slope on a position-time graph mean?
The object is moving in the negative direction.
How might a position-time graph be used in sports?
To analyze an athlete's performance over time.
Why did the germ cross the microscope?
To get to the other slide.
How is speed Calculated??
Speed is calculated by the total distance travelled over the total time it took to travel
Is Velocity, a Vector quantity or scalar quantity
Velocity is a vector quantity, meaning it has both magnitude (amount of movement) and direction.
If a velocity-time graph shows a horizontal line above the time axis, what does that indicate?
The object is moving at a constant positive velocity.
In traffic monitoring, what does a position-time graph help determine?
it determine what is the traffic patterns and vehicle speeds
What's a sign differences from speed and velocity
Speed: Always positive or zero
Velocity: Can be positive, negative, or zero, depending on the direction of motion.
If Jhonny travelled a distance of 1000km in 20 hours, what was his overall speed?
Jhonny's overall speed was 50km/h
V=?
△d= 1000km
T= 20 hours
V = 1000 / 20
V= 50
How is velocity calculated?
Velocity is calculated as displacement over time
V = △D/△T
In a distance-time graph, what does a downward slope represent?
that the object is moving back towards the starting point.
How can engineers use position-time graphs?
To design safer roads and vehicles by analyzing motion.
Why do speedometers always look so calm?
Because they know how to gauge their speed without losing their "velocity"!
A plane is moving at a speed of 150km/h how far does it go in 3 hours?
V= 150km/h
T= 3 hours
△D = ?
D= 1500 x 3 = 450
△d = 450km/h
In a velocity-time graph, what does a line that slopes downward indicate?
What is the object is decelerating (slowing down)?
If a graph shows a rapid increase in height over time, what does that indicate about the object's motion?
A fast increase in height over time on a graph means that the object is moving upward quickly.
What information can be gathered from a position-time graph of a marathon runner?
What is the runner’s pace and how it changes throughout the race
Whats key differences for real world application about navigation
Speed: Useful for determining how quickly you’ll arrive at a destination (e.g., a car's speedometer).
and than Velocity is important for route planning and understanding movement direction (e.g., GPS navigation showing heading).
If a train moves at a constant speed of 80 km/h for 3 hours, how far does it travel?
What is 240 kilometers
(Distance = speed × time)
(Distance = 80 x 3 )
= 240 kilmoteters
If a runner completes a 400-meter lap in 50 seconds, what is their average velocity?
8 meters per second
( v = distance / time )
( v = 400 meters / 50 seconds )
8 meters per second
How can you tell if an object is accelerating on a position-time graph?
The graph will show a curve (that means the slope is changing).
In ecosystem , how do researchers use position-time graphs?
to track animal movements and habitat changes over time.
Why don't ants get sick?