Engineering Board Exam Reviewer · Engineering Mechanics · hard
A projectile is launched with an initial speed of 28 m/s at an angle of 45° above the horizontal. Neglecting air resistance, what is its horizontal range? (g = 9.81 m/s2)
- 56.51
- 2.85
- 159.84
- 79.92
Answer
D. 79.92
Solution
Range R = (v02 (2 )) / g = (282 × (90°)) / 9.81 = 79.92 m.
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