Describing motion

avatar
Created by
Olivia !

Cards (18)

  • The movement of objects can be described using motion graphs and numerical values, which are both used to help in the design of faster and more efficient vehicles.
  • Velocity and acceleration are important factors in the design of faster and more efficient vehicles.
  • Distance-time graphs, velocity-time graphs, and velocity, acceleration and distance are used to describe the motion of objects.
  • Speed, distance and time, distance close distance, and numerical description of how far apart two things are are all related to the motion of objects.
  • The distance from Edinburgh to Glasgow is approximately 50 miles.
  • The speed at which a person can walk, run or cycle depends on many factors including: age, terrain, fitness, distance travelled.
  • Some typical values for speed in metres per second (m/s) include: Method of travel: walking 1.5, running 3, cycling 6, car 13-30, train 50, aeroplane 250.
  • The speed of the wind and the speed of sound also vary.
  • A typical value for the speed of sound in air is about 330 m/s.
  • The distance travelled by an object moving at constant speed can be calculated using the equation: distance travelled = speed × time (s = v × t).
  • This equation is used when: distance travelled (s) is measured in metres (m), speed (v) is measured in metres per second (m/s), and time (t) is measured in seconds (s).
  • An example of using this equation is: a car travels 500 m in 50 s, then 1,500 m in 75 s.
  • The average speed for the whole journey of the car can be calculated using this equation.
  • The distance an object moves is a scalar quantity that does not include an associated direction.
  • The distance travelled in a fixed time period, usually one second, is the rate of change.
  • The amount of change in the size of a quantity each second is the rate of change.
  • Speed is the distance travelled per unit time, and like distance, it does not have an associated direction, so it is a scalar quantity.
  • When people walk, run, or travel in a car, their speed will change, and they may speed up, slow down or pause for traffic.