Chapter 1 - Movement And Position

Question 1

What are distance time graphs

Answer 1

• plot motion of object
• indicate how far the object has moved each second , min or hr
• a straight kind of gradient in a distance graph indicates constant or steady speed
• gradient indicates speed, greater the gradient ,greater the speed

Question 2

What’s the average speed

Answer 2

S = distance
———
Time

Question 3

What’s a vector quantity

Answer 3

• a quantity describes something can be measured
• in vector quantities direction is very important
• vector quantities include force, velocity, and acceleration
  Velocity = distance in stated direction
  —————————
  Time taken

Question 4

What’s acceleration

Answer 4

• doesn’t only refer to how much the velocity changes but also to how quickly it changes
• m/s^2

Question 5

What are velocity time graphs

Answer 5

• acceleration can be calculated from this

- straight line or constant gradient represents a constant acceleration

Question 6

How to measure acceleration

Answer 6

• motion sensor can measure the velocity as it travels and if it is attached to a data logger the velocity time graphs plotted