Topic 2 - Forces And Motion - Graphs Flashcards
What does the gradient represent in displacement time graphs?
Velocity
A steeper gradient indicates a faster speed.
What does a negative gradient in a displacement time graph indicate?
Returning back to the starting point
This indicates that the object is moving in the opposite direction.
What does a horizontal line in a displacement time graph represent?
Stationary
The object is not moving.
What does 0 distance mean in a displacement time graph?
Back to starting point
The object has returned to its initial position.
What does a curved line in a displacement time graph indicate?
Velocity is changing (acceleration)
The slope of the curve varies over time.
What does the gradient represent in velocity time graphs?
Acceleration
A steeper gradient means greater acceleration.
What does a negative gradient in a velocity time graph indicate?
Deceleration
The object is slowing down.
What does a horizontal line in a velocity time graph indicate?
Constant speed
The speed of the object does not change.
What does 0 velocity mean in a velocity time graph?
Stationary
The object is not moving.
What does the area under the line in a velocity time graph represent?
Distance travelled
This is calculated over the time intervals.
What does a curved line in a velocity time graph indicate?
Acceleration is changing
The rate of acceleration varies.
What is average speed used for?
When speed changes during motion
It is calculated using overall distances and timings.
Fill in the blank: Average speed is calculated using _______.
Overall distances and timings
This provides a general measure of speed over a journey.
What is the formula for calculating constant speed?
speed = distance / time
How do you determine average speed?
Average speed = total distance / total time
What is the advantage of using light gates to measure speed?
It removes reaction time and human error with a stopwatch
Fill in the blank: For constant speeds, use _______ to measure time taken.
stopwatch
What is the speed of sound?
340 m/s
What is the approximate walking speed in m/s?
5 km/h = ~ 1.4 m/s
List typical speeds for the following modes of transportation: Running, Cycling, Bus.
- Running: ~6 miles per hour = ~3 m/s
- Cycling: 15 km/h = ~4 m/s
- Bus: 14 km/h
What is the speed of a train?
125 miles/h
What is the speed of a plane?
900 km/h
What is the acceleration due to gravity?
9 = 10 m/s²
How do you measure speed using light gates?
Set up two light gates, measure distance between them, and record time taken to pass from the first to the second
Fill in the blank: Typical walking speed is approximately _______ m/s.
1.4
