A bullet is fired with a certain velocity at an angle θ above the horizontal at a location where g = 10.0 m/s². The initial x- and y-components of its velocity are 86.6 m/s and 50.0 m/s respectively. How long does it take before the bullet hits the ground? A) 5.0 seconds B) 10.0 seconds C) 15.0 seconds D) 20.0 seconds E) None of the other choices is correct.

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Quizplus · Accepted Answer

The time of flight for a projectile is given by $ t = \frac{2v_{y0}}{g} $. Substituting $ v_{y0} = 50.0 \, \text{m/s} $ and $ g = 10.0 \, \text{m/s}^2 $, we get $ t = \frac{2 \times 50.0}{10.0} = 10.0 \, \text{seconds} $.

A Bullet Is Fired with a Certain Velocity at an Angle