SP1 Motion Flashcards
What is a Scalar Quantity?
Quantities that only have a magnitude
What is a Vector Quantity?
Quantities that have a magnitude and a direction
What are some examples of scalar quantities and their corresponding Vector Quantities?
speed - velocity
Distance - Displacement
Mass - Weight
What is acceleration?
a measure of how fast velocity is changing
What is the equation relating average speed, distance, and time?
speed = distance/time
What is momentum?
a combination and velocity
State the formula for acceleration.
a = (v - u ) / t
What does a negative value obtained from the formula for acceleration mean?
Deceleration
State the formula where acceleration is related to initial velocity/final velocity, and distance.
v^2 - u^2 = 2a x D
What is the acceleration of free fall?
If no external forces are present, such as air resistance, the acceleration will be 9.8 m/s^2
How do you represent a negative velocity on a velocity/time graph, and what does it mean?
A line below the x-axis represents it, and it means the object is moving in the opposite direction
How do you compare accelerations on a velocity/time graph?
The steeper the line, the greater the acceleration
How do you calculate accelerations from a velocity/time graph?
Divide velocity by time
How can you use a velocity/time graph? To calculate the total distance traveled?
area under graph is distance traveled - calculate it
