Flashcards in Chapter 8.1 Deck (38):
What is displacement?
How far you have travelled from the origin.
Slop of a graph- rise/run
What is instantaneous speed?
The speed of an object at any particular moment.
True or false: a scalar quantity is a quantity that has a size.
What is speed?
The measure of how quickly something moves.
A vector quantity only has a magnitude. True or False
Represented by an arrow, has a direction and a magnitude.
Formula for calculating speed is?
Average speed is equal to distance travelled divided by time taken
What is SI UNIT for speed?
How do you convert m/s to km/h?
Multiply by 3.6
Formula for distance?
Average speed x time taken
What is another way of writing m/s?
In a distance-time graph what does the gradient represent?
The steeper the gradient the faster the object.
What is a distance-time graph?
It shows how far an object is moving as time progresses.
What is a displacement time graph?
A graph that shows how the position of an object changes compared to where it started.
What is a velocity time graph?
A graph that shows the change in velocity over time. It is basically mapping acceleration.
What is the difference between speed and velocity?
Speed is the rate at which something travels while velocity is the rate at which displacement changes. Speed is scalar- velocity is vector.
What does the area below a speed time graph represent?
Distance travelled. Eg: 5 seconds at 2 m/s : 10m
What does the area below a velocity time graph represent?
How is acceleration measured?
M/s/s or m/s2
What is acceleration?
When an objects velocity changes, we have acceleration
The velocity of an object changes if...
The speed changes.
The direction of motion changes.
What is a force?
A push,pull or twist on an object.
What is distance?
The measurement of the path or journey taken.
Formula for force?
Force is equal to mass times acceleration
What is the difference between displacement and distance?
Displacement is how far an a object travels from its point of origin, and distance is the measurement of the path taken. Distance is scalar displacement is vector
What are the 2 types of forces?
Contact and non contact
What is newtons 1st law?
Basically, a force is needed to get something to move.
A force is required to change the speed and direction of something that is already moving.
What is newtons 2nd law?
An object will accelerate in the direction of an unbalanced force acting on it.
What is Newtons 3rd law?
For every action force there is an equal or opposite reaction force.
What is the formula for acceleration?
Final velocity- initial velocity
How is velocity written?
How is acceleration written?
Value of each tick on a ticket timer?
1 50th of a second, or 0.02s
What does an even spacing on a ticker timer indicate?
What does de acceleration look like on ticker tape?
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What does acceleration look likes?
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