Velocity And Scalars Flashcards
(28 cards)
Define Scalar
A quantity that has magnitude only
3 examples of scalar quantities
Mass
Distance
Speed
Define vector
A quantity that has magnitude and direction
3 examples os vector quantities
Velocity
Diplacement
Weight(any force)
Give an example of where one is vector and the other is scalar
Velocity&speed
What is meant by the term displacement
The overall change in position including direction
What does a diagram that shows an example of displacement
The fastest route
what is the equation that links the change in velocity, acceleration and time
Acceleration = change in velocity over time
What’re the units for acceleration
m/s squared
An object accelerates from 10 m 10 MS to 20 MS in five seconds calculate the acceleration
20 - 10 / 5 =2 m/s squared
Call flows down from 30 m MS to 10 MS in four seconds calculate acceleration
10 - 30 / 4 =2.5 -5m/s squared
What is the acceleration due to gravity?
9.8 m/s squared
What is the equation that times speed and distance?
Speed = distance over time
The triangle is D S T
What are the units for speed?
M/S
What is the estimate speed for walking?
1.5 M/S
What is the estimate speed for cycling?
6M/S
Calculate the speed if an object travels 10 m in two seconds
10/2 = 5 M/S
How far would thrust SSC travel in five seconds if the speed was 341M/S?
341 X 5 =1,705 M
What does a horizontal line represent on a distance time graph?
The object is stationary
What is the area for a triangle?
1/2 X B X H
What is the area for a rectangle?
B X H
What does a sloping line represent on a velocity time graph
Acceleration or deceleration
What does the horizontal line represent on a velocity time graph?
Constant velocity
How do you calculate the distance travelled on a slope part of the graph?
Area of a triangle
