The effect of gravity on a falling object can be modeled by a ball dropped from different heights. What is a limitation of this model? A. Not all objects bounce, even though balls do.

B. Some balls float in water, while others sink.

C. The ball can be dropped from varying heights.

D. Friction with air also affects the fall of the object.

Correct answer is D

here we know that ball will drop down by total distance 3.2 m

so here we know that

now using kinematics

now in the same time it will cover horizontal distance of 0.75 m

so speed of the ball will be

pretty sure it's false

we have been given a quadratic function and we need to restrict the domain such that it becomes a one to one function.

we know that vertex of this quadratic function occurs at (5,2).

further, we know that range of this function is .

if we restrict the domain of this function to either or , it will become one to one function.

let us know find its inverse.

upon interchanging x and y, we get:

let us now solve this function for y.

hence, the inverse function would be if we restrict the domain of original function to and the inverse function would be if we restrict the domain to .