Answer:
1.The distance between dots on a dot diagram represents the object's position change during that time interval. A large distance between dots indicates that the object was moving fast during that time interval. A small distance between dots means the object was moving slow during that time interval
2.A devices that could identify the position of a moving object at constant intervals of time.
3.One type of motion diagram is a ticker-tape diagram. A stationary "ticker" makes a mark at regular time intervals. A moving object drags a tape past the ticker, and a trail of marks is left on the tape. For an object moving with uniform velocity the marks are spaced uniformly on the tape.
4.If an object moves along a straight line, its motion can be represented by a velocity-time graph. The gradient of the line is equal to the acceleration of the object.
5.The slope of a motion graph tells us the rate of change of the variable on the vertical axis, so we can understand velocity as the slope of the position vs. time graph.
Explanation: