Please answer this questions

:$1.$ the objects illatitum acceleration was at the time interval$\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_$ its magnitude was$\_\_\_\_\_\_\_\_\_\_\_\_\_\_$ its unit$\_\_\_\_\_\_\_\_\_$

$2.$ The object experienced a decelerating at a certain time interval, which was between$\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_$ second.

$3.$ Where is the time interval in which the object acceleration was zero$\_\_\_\_\_\_\_\_\_\_\_\_$ second.

$4.$ The object initial velocity is$\_\_\_\_\_\_\_\_\_\_$

$5.$ When the object was at rest?$\_\_\_\_\_\_\_\_\_\_\_\_\_\_$

$6.$ What's the initial position? Can you find it from the graph?

$7.$ Can you find its travelled distance in $80$ sec$.,40$ sec$.?$

$8.$ Draw the $($position $-$ time$)$ graph.

$9.$ Draw the $($acceleration $-$ time$)$ graph.

Part $2$: Answer the following question

$1.$ Which experiments helped us in finding the gravity acceleration value

$\mathrm{.}2$ What is the importance of kinematics science? Mention some of its applications