Chapter 1 Flashcards
What is the formula for gradient?
^x
What does the gradient of a distance-time graph represent?
Speed
What do curves represent on a distance-time graph?
Acceleration-steepening curve
Deceleration-rounding off curve
What does a straight line on a distance-time graph represent?
Stopped
Define acceleration.
How quickly the velocity is changing speed or direction.
What are the units for acceleration?
m/s*2
What does the gradient of a velocity-time graph represent?
Acceleration
What do curves represent on a velocity-time graph?
Change in acceleration
What does a straight line represent on a velocity-time graph?
Constant Speed
What does the area under the graph represent on a velocity-time graph?
Distance
What is gravitational force?
The force of attraction between masses
What is weight?
The force of gravity pulling an object towards the centre of the Earth
All things travel towards the Earth with the same acceleration. True or False?
True
What is weight measured in?
Newtons
What is mass measured in?
Kilograms
What is the acceleration due to gravity on Earth?
10N/Kg
Define the term resultant force.
The overall force on an object
What makes an object move?
A force
What are the five forms of acceleration?
- Starting
- Stopping
- Speeding up
- Slowing down
- Changing direction
When two objects interact, what do the forces need to be?
Equal
Things move due to the same masses. True or False?
False-it’s due to different masses
What does friction do to a moving object?
Slow it down or stop it.
What increases the amount of drag?
Increase in speed
What is terminal velocity?
The maximum speed an object travels once the forces are balanced.
