[tex]\large \mathfrak{Solution : }[/tex]
Average speed :
- [tex] \boxed{ \dfrac{distance \: \: covered}{total \: \: time \: \: taken} }[/tex]
- [tex] \dfrac{100}{8} [/tex]
- [tex]12.5 \: \: m/s[/tex]
The horizontal (flat) line on a Distance - time graph shows that the body is at rest because the value of Distance (on y - axis ) is same for increasing time ( on x - axis ), it basically shows that the object is at the same position with the change in time.
therefore, correct option is :
- [tex]a. \: \: the \: \: object \: \: is \: \: not \: \: moving[/tex]
