Sport Physics Flashcards
What is a vector
A quantity that has both direction and magnitude
What is a quantity with only a magnitude known as
A scalar
What is the magnitude of a vector
The size/value
What are the two measurements that are required to determine the value of a vector
+ displacement
+ distance
What is the distance
The total measurement of how far an object has travelled in a certain time
What is the displacement
The mesurent of how far from the point of origin an object has travelled in a certain time
What is the equation to calculate velocity when given time and displacement
V= S/T (S= displacement)
Therefore velocity is the change in displacement per unit of time
What is the acceleration of an object
The increase or decrease in velocity of an object per unit of time
What is the equation to find acceleration and what does each symbol represent
a= v-u/t
a: acceleration
v: final velocity
u: initial velocity
t: time
What is the experiment used to determine the acceleration of an object
Place the object at the top of a downward slope and let it run down, through two light gates at separate heights of the slope. The velocity at each height can be recorded and plugged into the equation.
What does the vertical velocity of an object always equate to
The gravitational field strength of the planet it is situated on
E.g. vertical velocity on earth = 9.8
When determining the bearing of a vector, what is the striating point of the angle
The north-pointing line
What must the lines of distance do in a vector diagram, when determining the displacement
They must go TIP-TO-TAIL in the diagram
How do you determine the displacement of a vector from two lines of distance
Use Pythagorus’ theorem
How can the distance travelled by an object be calculated from a velocity/time graph
By calculating the area of the space beneath the line of the graph
