A Projectile Is Projected from the Origin with a Velocity

question 6

Multiple Choice

A projectile is projected from the origin with a velocity of 20.0 m/s at an angle of 30.0 degrees above the horizontal. The projectile lands on a roof that is 4.00 m high. What is the speed when the projectile hits the roof?

• A) 19.2 m/s
• B) 17.9 m/s
• C) 12.5 m/s
• D) 9.20 m/s
• E) 8.40 m/s

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Definitions:

Operant Conditioning

A process of instruction where behavior intensity is adjusted by giving incentives or imposing sanctions.

Allergic Responses

The immune system's hypersensitive reaction to a foreign substance, producing symptoms ranging from mild to life-threatening.

Phobic Response

An intense and irrational fear response to a particular object, situation, or activity, leading to avoidance behavior.

Stimulus Generalization

The process by which a conditioned response starts occurring in response to stimuli that are similar but not identical to the original conditioned stimulus.