Unit 2.1: Distance, speed and acceleration Flashcards
What is the difference between a scalar and a vector?
A scalar is a number, whereas a vector is a number with a direction
How are distance and displacement different?
They both measure how far something has travelled, but displacement also says the direction.
What is the equation for speed?
Speed(m/s) = Distance(m)/Time(s)
What is the equation for Velocity?
Velocity = Displacement/Time
Give some examples of Scalar quantities.
Speed, Distance, Mass, Time.
Give some examples of Vector quanitities.
Velocity, Displacement, Force, Acceleration, Momentum.
What is the equation for acceleration?
Acceleration = change in Velocity/Time
Is acceleration and deceleration the same?
Deceleration is similar to acceleration, just negatice acceleration, when a car slows down
What is constant acceleration?
Accelerating or deceleration at a constant rate.
