a.

The posotion equations are and .

Here the initial velocity and .

Since the surface of the water at , the value of the initial height .

Substitute the values of , , , and in posotion equations.

and

and .

b.

The vertical position equation is .

Substitute in .

Draw a coordinate plane.

Graph the function .

Graph :

Observe the graph :

The positive zero of the graph of the function is about .

Thus, .

Substitute in horizontal position equation .

This means when the frog reaches the surface of the water, he is only about from from where he jumped.

Therefore, frog is about from the other bank.

 c.

The horizontal position equation is .

Substitute , and in .

.

a.

The parametric equations are and .

b.

No, the frog is from the other bank.

c.

.