The Range of a Projectile Fired at an Angle $\theta$ With the Horizontal and with an Initial Velocity of V₀

question 164

Multiple Choice

The range of a projectile fired at an angle $\theta$ with the horizontal and with an initial velocity of v₀ feet per second is $r = \frac { 1 } { 32 } v _ { 0 } ^ { 2 } \sin 2 \theta$ where r is measured in feet.A golfer strikes a golf ball at 90 feet per second.Ignoring the effects of air resistance, at what angle must the golfer hit the ball so that it travels 150 feet? (Round your answer to the nearest degree.)

• A)14°
• B)36°
• C)18°
• D)27°
• E)41°

Recognize the importance of blinding participants in an experiment to prevent bias.

Define the terms "population" and "sample" in the context of a study.

Understand the objections to claims of extrasensory perception.

Describe the concept and purpose of a placebo in research.

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