$9$

File Upload

$1$ point

Construct a position vs$.$ time graph and an acceleration vs$.$ time graph for the given velocity vs$.$ time graph.

The submission file must be $.$pdf or $.$jpeg format.

$10$

File Upload

$6$ points

For the following question, you need to show full work. Please make sure to submit a $.$pdf or $.$jpeg file.

A stone is thrown from the top of a cliff with an initial velocity of $20\frac{m}{s}$ straight upwards, at an initial height of $60$ m above the ground. The stone just misses the edge of the roof on its way down. Determine

A$.$ The time needed for the stone to reach its maximum height.

B$.$ the maximum height.

C$.$ time needed for the stone to return to the height from which it was thrown, and velocity of the stone at that height.

D$.$ time needed for the stone to reach the ground.