Therapists practice by using positive reinforcers to reward closer and closer approximations of a desired behavior.

Therapists practice behavior modification by using positive reinforcers to reward closer and closer approximations of a desired behavior.

Explanation:

The behavior modification methods are based on behavioral methodology, this methodology determines that the situations faced by an individual determine their behavior and this can be modified through rewards or punishments in order to eliminate, modify or reinforce it.

Positive reinforcements are additions that are given to the person each time they perform the behavior they want to strengthen. For example, when a child is taught to go to the bathroom, a compliment can be given each time the child asks to be taken to the bathroom. In the beginning, you can "reward" the approximations to the desired behavior until it is fully realized.

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we can solve this via the kinematic equation:

where the vertical velocity is zero and so:

since the height of the building is 29.3 meters then:

the ball was in motion for approximately 2.45 seconds